61057612 has 48 divisors (see below), whose sum is σ = 134281728. Its totient is φ = 23598720.

The previous prime is 61057609. The next prime is 61057613. The reversal of 61057612 is 21675016.

61057612 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 (28).

It is not an unprimeable number, because it can be changed into a prime (61057613) 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 15 ways as a sum of consecutive naturals, for example, 41473 + ... + 42919.

It is an arithmetic number, because the mean of its divisors is an integer number (2797536).

Almost surely, 2^61057612 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 61057612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67140864).

61057612 is an abundant number, since it is smaller than the sum of its proper divisors (73224116).

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

61057612 is a wasteful number, since it uses less digits than its factorization.

61057612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 61057612 is about 7813.9370358354. The cubic root of 61057612 is about 393.7736079907.

The spelling of 61057612 in words is "sixty-one million, fifty-seven thousand, six hundred twelve".