57051121 has 2 divisors, whose sum is σ = 57051122. Its totient is φ = 57051120.

The previous prime is 57051107. The next prime is 57051143. The reversal of 57051121 is 12115075.

It is an a-pointer prime, because the next prime (57051143) can be obtained adding 57051121 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56175025 + 876096 = 7495^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 57051121 - 2⁵ = 57051089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57051092 and 57051101.

It is not a weakly prime, because it can be changed into another prime (57051221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28525560 + 28525561.

It is an arithmetic number, because the mean of its divisors is an integer number (28525561).

Almost surely, 2^57051121 is an apocalyptic number.

It is an amenable number.

57051121 is a deficient number, since it is larger than the sum of its proper divisors (1).

57051121 is an equidigital number, since it uses as much as digits as its factorization.

57051121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 57051121 is about 7553.2192474467. The cubic root of 57051121 is about 384.9651309287.

Adding to 57051121 its reverse (12115075), we get a palindrome (69166196).

The spelling of 57051121 in words is "fifty-seven million, fifty-one thousand, one hundred twenty-one".