57445121 has 4 divisors (see below), whose sum is σ = 57630144. Its totient is φ = 57260100.

The previous prime is 57445117. The next prime is 57445123. The reversal of 57445121 is 12154475.

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 57445121 - 2² = 57445117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57445123) 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, 92045 + ... + 92666.

It is an arithmetic number, because the mean of its divisors is an integer number (14407536).

Almost surely, 2^57445121 is an apocalyptic number.

It is an amenable number.

57445121 is a deficient number, since it is larger than the sum of its proper divisors (185023).

57445121 is a wasteful number, since it uses less digits than its factorization.

57445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185022.

The product of its digits is 5600, while the sum is 29.

The square root of 57445121 is about 7579.2559661223. The cubic root of 57445121 is about 385.8492995439.

Adding to 57445121 its reverse (12154475), we get a palindrome (69599596).

The spelling of 57445121 in words is "fifty-seven million, four hundred forty-five thousand, one hundred twenty-one".