57808121 has 4 divisors (see below), whose sum is σ = 66066432. Its totient is φ = 49549812.

The previous prime is 57808117. The next prime is 57808133. The reversal of 57808121 is 12180875.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57808121 - 2² = 57808117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57808111) 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, 4129145 + ... + 4129158.

It is an arithmetic number, because the mean of its divisors is an integer number (16516608).

Almost surely, 2^57808121 is an apocalyptic number.

It is an amenable number.

57808121 is a deficient number, since it is larger than the sum of its proper divisors (8258311).

57808121 is an equidigital number, since it uses as much as digits as its factorization.

57808121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258310.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 57808121 is about 7603.1651961535. The cubic root of 57808121 is about 386.6603304385.

Adding to 57808121 its reverse (12180875), we get a palindrome (69988996).

The spelling of 57808121 in words is "fifty-seven million, eight hundred eight thousand, one hundred twenty-one".