57353421 has 16 divisors (see below), whose sum is σ = 80150400. Its totient is φ = 36410880.

The previous prime is 57353411. The next prime is 57353423. The reversal of 57353421 is 12435375.

It is not a de Polignac number, because 57353421 - 2⁵ = 57353389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57353423) 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, 14905 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (5009400).

Almost surely, 2^57353421 is an apocalyptic number.

It is an amenable number.

57353421 is a deficient number, since it is larger than the sum of its proper divisors (22796979).

57353421 is a wasteful number, since it uses less digits than its factorization.

57353421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716.

The product of its digits is 12600, while the sum is 30.

The square root of 57353421 is about 7573.2041435577. The cubic root of 57353421 is about 385.6438789970.

Adding to 57353421 its reverse (12435375), we get a palindrome (69788796).

The spelling of 57353421 in words is "fifty-seven million, three hundred fifty-three thousand, four hundred twenty-one".