57253121 has 4 divisors (see below), whose sum is σ = 57287892. Its totient is φ = 57218352.

The previous prime is 57253109. The next prime is 57253199. The reversal of 57253121 is 12135275.

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 8042896 + 49210225 = 2836^2 + 7015^2 .

It is a cyclic number.

It is not a de Polignac number, because 57253121 - 2⁶ = 57253057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57253321) 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, 14786 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (14321973).

Almost surely, 2^57253121 is an apocalyptic number.

It is an amenable number.

57253121 is a deficient number, since it is larger than the sum of its proper divisors (34771).

57253121 is a wasteful number, since it uses less digits than its factorization.

57253121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34770.

The product of its digits is 2100, while the sum is 26.

The square root of 57253121 is about 7566.5792138852. The cubic root of 57253121 is about 385.4189423945.

Adding to 57253121 its reverse (12135275), we get a palindrome (69388396).

The spelling of 57253121 in words is "fifty-seven million, two hundred fifty-three thousand, one hundred twenty-one".