61111056 has 40 divisors (see below), whose sum is σ = 167158944. Its totient is φ = 19171840.

The previous prime is 61111031. The next prime is 61111103. The reversal of 61111056 is 65011116.

It is a super-2 number, since 2×61111056² = 7469122330870272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36630 + ... + 38261.

Almost surely, 2^61111056 is an apocalyptic number.

It is an amenable number.

61111056 is an abundant number, since it is smaller than the sum of its proper divisors (106047888).

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

61111056 is a wasteful number, since it uses less digits than its factorization.

61111056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74919 (or 74913 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 61111056 is about 7817.3560747864. The cubic root of 61111056 is about 393.8884650838. Note that the first 3 decimals are identical.

The spelling of 61111056 in words is "sixty-one million, one hundred eleven thousand, fifty-six".