57421023 has 16 divisors (see below), whose sum is σ = 84061056. Its totient is φ = 34575840.

The previous prime is 57420991. The next prime is 57421027. The reversal of 57421023 is 32012475.

It is not a de Polignac number, because 57421023 - 2⁵ = 57420991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57420984 and 57421002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (5253816).

Almost surely, 2^57421023 is an apocalyptic number.

57421023 is a deficient number, since it is larger than the sum of its proper divisors (26640033).

57421023 is a wasteful number, since it uses less digits than its factorization.

57421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11254.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 57421023 is about 7577.6660654848. Note that the first 3 decimals coincide. The cubic root of 57421023 is about 385.7953379149.

Adding to 57421023 its reverse (32012475), we get a palindrome (89433498).

The spelling of 57421023 in words is "fifty-seven million, four hundred twenty-one thousand, twenty-three".