57436121 has 4 divisors (see below), whose sum is σ = 58837044. Its totient is φ = 56035200.

The previous prime is 57436117. The next prime is 57436123. The reversal of 57436121 is 12163475.

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 23377225 + 34058896 = 4835^2 + 5836^2 .

It is a cyclic number.

It is not a de Polignac number, because 57436121 - 2² = 57436117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57436123) 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, 700400 + ... + 700481.

It is an arithmetic number, because the mean of its divisors is an integer number (14709261).

Almost surely, 2^57436121 is an apocalyptic number.

It is an amenable number.

57436121 is a deficient number, since it is larger than the sum of its proper divisors (1400923).

57436121 is a wasteful number, since it uses less digits than its factorization.

57436121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400922.

The product of its digits is 5040, while the sum is 29.

The square root of 57436121 is about 7578.6622170407. The cubic root of 57436121 is about 385.8291479917.

Adding to 57436121 its reverse (12163475), we get a palindrome (69599596).

The spelling of 57436121 in words is "fifty-seven million, four hundred thirty-six thousand, one hundred twenty-one".