2155540504 has 32 divisors (see below), whose sum is σ = 4368651840. Its totient is φ = 991180800.

The previous prime is 2155540501. The next prime is 2155540511. The reversal of 2155540504 is 4050455512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155540501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10057 + ... + 66424.

It is an arithmetic number, because the mean of its divisors is an integer number (136520370).

Almost surely, 2^2155540504 is an apocalyptic number.

It is an amenable number.

2155540504 is an abundant number, since it is smaller than the sum of its proper divisors (2213111336).

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

2155540504 is a wasteful number, since it uses less digits than its factorization.

2155540504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76771 (or 76767 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2155540504 is about 46427.7988278574. The cubic root of 2155540504 is about 1291.7705999051.

The spelling of 2155540504 in words is "two billion, one hundred fifty-five million, five hundred forty thousand, five hundred four".