2591515220 has 48 divisors (see below), whose sum is σ = 6251927808. Its totient is φ = 883906560.

The previous prime is 2591515183. The next prime is 2591515237. The reversal of 2591515220 is 225151952.

2591515220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2591515220² = 13431902270983296800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20936 + ... + 74975.

It is an arithmetic number, because the mean of its divisors is an integer number (130248496).

Almost surely, 2^2591515220 is an apocalyptic number.

2591515220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2591515220 is an abundant number, since it is smaller than the sum of its proper divisors (3660412588).

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

2591515220 is a wasteful number, since it uses less digits than its factorization.

2591515220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96120 (or 96118 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 2591515220 is about 50906.9270335580. The cubic root of 2591515220 is about 1373.5714476735.

The spelling of 2591515220 in words is "two billion, five hundred ninety-one million, five hundred fifteen thousand, two hundred twenty".