61502400 has 126 divisors (see below), whose sum is σ = 218645232. Its totient is φ = 16396800.

The previous prime is 61502393. The next prime is 61502429. The reversal of 61502400 is 420516.

It is a happy number.

61502400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 12265 + ... + 16535.

Almost surely, 2^61502400 is an apocalyptic number.

61502400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61502400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109322616).

61502400 is an abundant number, since it is smaller than the sum of its proper divisors (157142832).

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

61502400 is a wasteful number, since it uses less digits than its factorization.

61502400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4281 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 61502400 is about 7842.3465875974. The cubic root of 61502400 is about 394.7274731811.

Adding to 61502400 its reverse (420516), we get a palindrome (61922916).

The spelling of 61502400 in words is "sixty-one million, five hundred two thousand, four hundred".