57171253 has 4 divisors (see below), whose sum is σ = 58716460. Its totient is φ = 55626048.

The previous prime is 57171251. The next prime is 57171269. The reversal of 57171253 is 35217175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54066609 + 3104644 = 7353^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 57171253 - 2¹ = 57171251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57171251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772548 + ... + 772621.

It is an arithmetic number, because the mean of its divisors is an integer number (14679115).

Almost surely, 2^57171253 is an apocalyptic number.

It is an amenable number.

57171253 is a deficient number, since it is larger than the sum of its proper divisors (1545207).

57171253 is a wasteful number, since it uses less digits than its factorization.

57171253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545206.

The product of its digits is 7350, while the sum is 31.

The square root of 57171253 is about 7561.1674363156. The cubic root of 57171253 is about 385.2351472922.

It can be divided in two parts, 571 and 71253, that added together give a square (71824 = 268²).

The spelling of 57171253 in words is "fifty-seven million, one hundred seventy-one thousand, two hundred fifty-three".