615532056 has 128 divisors (see below), whose sum is σ = 1727308800. Its totient is φ = 181647360.

The previous prime is 615532031. The next prime is 615532061. The reversal of 615532056 is 650235516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2100646 + ... + 2100938.

It is an arithmetic number, because the mean of its divisors is an integer number (13494600).

Almost surely, 2^615532056 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 615532056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863654400).

615532056 is an abundant number, since it is smaller than the sum of its proper divisors (1111776744).

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

615532056 is a wasteful number, since it uses less digits than its factorization.

615532056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 615532056 is about 24809.9185004707. The cubic root of 615532056 is about 850.6486656383.

The spelling of 615532056 in words is "six hundred fifteen million, five hundred thirty-two thousand, fifty-six".