2155501512 has 48 divisors (see below), whose sum is σ = 6145074000. Its totient is φ = 680684256.

The previous prime is 2155501483. The next prime is 2155501541. The reversal of 2155501512 is 2151055512.

2155501512 is a `hidden beast` number, since 2 + 155 + 501 + 5 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2155501483) and next prime (2155501541).

It is a super-2 number, since 2×2155501512² = 9292373536468572288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 786462 + ... + 789197.

It is an arithmetic number, because the mean of its divisors is an integer number (128022375).

Almost surely, 2^2155501512 is an apocalyptic number.

It is an amenable number.

2155501512 is an abundant number, since it is smaller than the sum of its proper divisors (3989572488).

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

2155501512 is a wasteful number, since it uses less digits than its factorization.

2155501512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575690 (or 1575683 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 2155501512 is about 46427.3789051245. The cubic root of 2155501512 is about 1291.7628108265.

The spelling of 2155501512 in words is "two billion, one hundred fifty-five million, five hundred one thousand, five hundred twelve".