61057456 has 40 divisors (see below), whose sum is σ = 124992000. Its totient is φ = 28835136.

The previous prime is 61057439. The next prime is 61057481. The reversal of 61057456 is 65475016.

It is a happy number.

61057456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 29545 + ... + 31543.

It is an arithmetic number, because the mean of its divisors is an integer number (3124800).

Almost surely, 2^61057456 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 61057456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62496000).

61057456 is an abundant number, since it is smaller than the sum of its proper divisors (63934544).

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

61057456 is a wasteful number, since it uses less digits than its factorization.

61057456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 61057456 is about 7813.9270536651. The cubic root of 61057456 is about 393.7732726313.

The spelling of 61057456 in words is "sixty-one million, fifty-seven thousand, four hundred fifty-six".