2155202580 has 48 divisors (see below), whose sum is σ = 6296943744. Its totient is φ = 549732480.

The previous prime is 2155202501. The next prime is 2155202633. The reversal of 2155202580 is 852025512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779491 + ... + 782250.

It is an arithmetic number, because the mean of its divisors is an integer number (131186328).

Almost surely, 2^2155202580 is an apocalyptic number.

2155202580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155202580 is an abundant number, since it is smaller than the sum of its proper divisors (4141741164).

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

2155202580 is a wasteful number, since it uses less digits than its factorization.

2155202580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561776 (or 1561774 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 2155202580 is about 46424.1594431175. The cubic root of 2155202580 is about 1291.7030927686.

The spelling of 2155202580 in words is "two billion, one hundred fifty-five million, two hundred two thousand, five hundred eighty".