2555521156 has 6 divisors (see below), whose sum is σ = 4472162030. Its totient is φ = 1277760576.

The previous prime is 2555521127. The next prime is 2555521181. The reversal of 2555521156 is 6511255552.

It can be written as a sum of positive squares in only one way, i.e., 2014214400 + 541306756 = 44880^2 + 23266^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319440141 + ... + 319440148.

Almost surely, 2^2555521156 is an apocalyptic number.

It is an amenable number.

2555521156 is a deficient number, since it is larger than the sum of its proper divisors (1916640874).

2555521156 is a wasteful number, since it uses less digits than its factorization.

2555521156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638880293 (or 638880291 counting only the distinct ones).

The product of its digits is 75000, while the sum is 37.

The square root of 2555521156 is about 50552.1627232703. The cubic root of 2555521156 is about 1367.1825087698.

The spelling of 2555521156 in words is "two billion, five hundred fifty-five million, five hundred twenty-one thousand, one hundred fifty-six".