57426121 has 4 divisors (see below), whose sum is σ = 57453700. Its totient is φ = 57398544.

The previous prime is 57426079. The next prime is 57426133. The reversal of 57426121 is 12162475.

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 15681600 + 41744521 = 3960^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 57426121 - 2⁷ = 57425993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57426121.

It is not an unprimeable number, because it can be changed into a prime (57426191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10386 + ... + 14923.

It is an arithmetic number, because the mean of its divisors is an integer number (14363425).

Almost surely, 2^57426121 is an apocalyptic number.

It is an amenable number.

57426121 is a deficient number, since it is larger than the sum of its proper divisors (27579).

57426121 is a wasteful number, since it uses less digits than its factorization.

57426121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27578.

The product of its digits is 3360, while the sum is 28.

The square root of 57426121 is about 7578.0024412770. The cubic root of 57426121 is about 385.8067549090.

Adding to 57426121 its reverse (12162475), we get a palindrome (69588596).

The spelling of 57426121 in words is "fifty-seven million, four hundred twenty-six thousand, one hundred twenty-one".