61250000 has 120 divisors (see below), whose sum is σ = 172558152. Its totient is φ = 21000000.

The previous prime is 61249999. The next prime is 61250003. The reversal of 61250000 is 5216.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

61250000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60590656 + 659344 = 7784^2 + 812^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61250003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8749997 + ... + 8750003.

Almost surely, 2^61250000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86279076).

61250000 is an abundant number, since it is smaller than the sum of its proper divisors (111308152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61250000 is an frugal number, since it uses more digits than its factorization.

61250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 61250000 is about 7826.2379212493. The cubic root of 61250000 is about 394.1867581553.

Adding to 61250000 its reverse (5216), we get a palindrome (61255216).

The spelling of 61250000 in words is "sixty-one million, two hundred fifty thousand".