57054021 has 4 divisors (see below), whose sum is σ = 76072032. Its totient is φ = 38036012.

The previous prime is 57053999. The next prime is 57054029. The reversal of 57054021 is 12045075.

57054021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57054021 - 2¹⁰ = 57052997 is a prime.

It is a super-2 number, since 2×57054021² = 6510322624536882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57053982 and 57054000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57054029) 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 3 ways as a sum of consecutive naturals, for example, 9509001 + ... + 9509006.

It is an arithmetic number, because the mean of its divisors is an integer number (19018008).

Almost surely, 2^57054021 is an apocalyptic number.

It is an amenable number.

57054021 is a deficient number, since it is larger than the sum of its proper divisors (19018011).

57054021 is a wasteful number, since it uses less digits than its factorization.

57054021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19018010.

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

The square root of 57054021 is about 7553.4112161327. The cubic root of 57054021 is about 384.9716536166.

Adding to 57054021 its reverse (12045075), we get a palindrome (69099096).

The spelling of 57054021 in words is "fifty-seven million, fifty-four thousand, twenty-one".