2521057156 has 6 divisors (see below), whose sum is σ = 4411850030. Its totient is φ = 1260528576.

The previous prime is 2521057151. The next prime is 2521057157. The reversal of 2521057156 is 6517501252.

It can be written as a sum of positive squares in only one way, i.e., 1598720256 + 922336900 = 39984^2 + 30370^2 .

It is a super-3 number, since 3×2521057156³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2521057151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315132141 + ... + 315132148.

Almost surely, 2^2521057156 is an apocalyptic number.

It is an amenable number.

2521057156 is a deficient number, since it is larger than the sum of its proper divisors (1890792874).

2521057156 is a wasteful number, since it uses less digits than its factorization.

2521057156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630264293 (or 630264291 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 2521057156 is about 50210.1300137731. The cubic root of 2521057156 is about 1361.0086872437.

The spelling of 2521057156 in words is "two billion, five hundred twenty-one million, fifty-seven thousand, one hundred fifty-six".