2257562021 has 16 divisors (see below), whose sum is σ = 2662849728. Its totient is φ = 1886880000.

The previous prime is 2257562003. The next prime is 2257562023. The reversal of 2257562021 is 1202657522.

2257562021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2257562021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257562023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4445 + ... + 67341.

It is an arithmetic number, because the mean of its divisors is an integer number (166428108).

Almost surely, 2^2257562021 is an apocalyptic number.

It is an amenable number.

2257562021 is a deficient number, since it is larger than the sum of its proper divisors (405287707).

2257562021 is a wasteful number, since it uses less digits than its factorization.

2257562021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63172.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2257562021 is about 47513.8087401968. The cubic root of 2257562021 is about 1311.8370630758.

The spelling of 2257562021 in words is "two billion, two hundred fifty-seven million, five hundred sixty-two thousand, twenty-one".