61020750 has 128 divisors (see below), whose sum is σ = 177914880. Its totient is φ = 13641600.

The previous prime is 61020731. The next prime is 61020779. The reversal of 61020750 is 5702016.

61020750 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 (21).

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 63 ways as a sum of consecutive naturals, for example, 309652 + ... + 309848.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^61020750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61020750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88957440).

61020750 is an abundant number, since it is smaller than the sum of its proper divisors (116894130).

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

61020750 is a wasteful number, since it uses less digits than its factorization.

61020750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 61020750 is about 7811.5779455882. The cubic root of 61020750 is about 393.6943483957.

Adding to 61020750 its reverse (5702016), we get a palindrome (66722766).

The spelling of 61020750 in words is "sixty-one million, twenty thousand, seven hundred fifty".