57145263 has 16 divisors (see below), whose sum is σ = 87709440. Its totient is φ = 32417856.

The previous prime is 57145259. The next prime is 57145337. The reversal of 57145263 is 36254175.

It is not a de Polignac number, because 57145263 - 2² = 57145259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57145243) 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, 6870 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (5481840).

Almost surely, 2^57145263 is an apocalyptic number.

57145263 is a deficient number, since it is larger than the sum of its proper divisors (30564177).

57145263 is a wasteful number, since it uses less digits than its factorization.

57145263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19726.

The product of its digits is 25200, while the sum is 33.

The square root of 57145263 is about 7559.4485910019. The cubic root of 57145263 is about 385.1767625940.

The spelling of 57145263 in words is "fifty-seven million, one hundred forty-five thousand, two hundred sixty-three".