2257731563 has 16 divisors (see below), whose sum is σ = 2529465120. Its totient is φ = 2002599936.

The previous prime is 2257731559. The next prime is 2257731569. The reversal of 2257731563 is 3651377522.

It is a cyclic number.

It is not a de Polignac number, because 2257731563 - 2² = 2257731559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2257731563.

It is not an unprimeable number, because it can be changed into a prime (2257731569) 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, 44231 + ... + 80447.

It is an arithmetic number, because the mean of its divisors is an integer number (158091570).

Almost surely, 2^2257731563 is an apocalyptic number.

2257731563 is a deficient number, since it is larger than the sum of its proper divisors (271733557).

2257731563 is a wasteful number, since it uses less digits than its factorization.

2257731563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36446.

The product of its digits is 264600, while the sum is 41.

The square root of 2257731563 is about 47515.5928406665. The cubic root of 2257731563 is about 1311.8699017324.

The spelling of 2257731563 in words is "two billion, two hundred fifty-seven million, seven hundred thirty-one thousand, five hundred sixty-three".