1615560056 has 48 divisors (see below), whose sum is σ = 3335320800. Its totient is φ = 733082240.

The previous prime is 1615560053. The next prime is 1615560059. The reversal of 1615560056 is 6500655161.

It is an interprime number because it is at equal distance from previous prime (1615560053) and next prime (1615560059).

It is a super-2 number, since 2×1615560056² = 5220068589085446272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1615559998 and 1615560025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615560053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782081 + ... + 784143.

It is an arithmetic number, because the mean of its divisors is an integer number (69485850).

Almost surely, 2^1615560056 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 1615560056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1667660400).

1615560056 is an abundant number, since it is smaller than the sum of its proper divisors (1719760744).

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

1615560056 is a wasteful number, since it uses less digits than its factorization.

1615560056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900 (or 2885 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1615560056 is about 40194.0301039843. The cubic root of 1615560056 is about 1173.3863604507.

The spelling of 1615560056 in words is "one billion, six hundred fifteen million, five hundred sixty thousand, fifty-six".