57045021 has 32 divisors (see below), whose sum is σ = 85349376. Its totient is φ = 33600000.

The previous prime is 57045007. The next prime is 57045061. The reversal of 57045021 is 12054075.

57045021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57045021 - 2⁶ = 57044957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57044982 and 57045000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57045061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227146 + ... + 227396.

It is an arithmetic number, because the mean of its divisors is an integer number (2667168).

Almost surely, 2^57045021 is an apocalyptic number.

It is an amenable number.

57045021 is a deficient number, since it is larger than the sum of its proper divisors (28304355).

57045021 is a wasteful number, since it uses less digits than its factorization.

57045021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 57045021 is about 7552.8154353195. The cubic root of 57045021 is about 384.9514100707.

Adding to 57045021 its reverse (12054075), we get a palindrome (69099096).

The spelling of 57045021 in words is "fifty-seven million, forty-five thousand, twenty-one".