61315056 has 300 divisors, whose sum is σ = 215517456. Its totient is φ = 16727040.

The previous prime is 61315013. The next prime is 61315069. The reversal of 61315056 is 65051316.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2665861 + ... + 2665883.

Almost surely, 2^61315056 is an apocalyptic number.

61315056 is a gapful number since it is divisible by the number (66) 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 61315056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107758728).

61315056 is an abundant number, since it is smaller than the sum of its proper divisors (154202400).

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

61315056 is a wasteful number, since it uses less digits than its factorization.

61315056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 61315056 is about 7830.3930935809. The cubic root of 61315056 is about 394.3262691205.

The spelling of 61315056 in words is "sixty-one million, three hundred fifteen thousand, fifty-six".