57582421 has 4 divisors (see below), whose sum is σ = 62011852. Its totient is φ = 53152992.

The previous prime is 57582373. The next prime is 57582439. The reversal of 57582421 is 12428575.

It is a happy number.

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 38564100 + 19018321 = 6210^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 57582421 - 2²³ = 49193813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57582121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2214696 + ... + 2214721.

It is an arithmetic number, because the mean of its divisors is an integer number (15502963).

Almost surely, 2^57582421 is an apocalyptic number.

It is an amenable number.

57582421 is a deficient number, since it is larger than the sum of its proper divisors (4429431).

57582421 is a wasteful number, since it uses less digits than its factorization.

57582421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429430.

The product of its digits is 22400, while the sum is 34.

The square root of 57582421 is about 7588.3081777166. The cubic root of 57582421 is about 386.1564620256.

The spelling of 57582421 in words is "fifty-seven million, five hundred eighty-two thousand, four hundred twenty-one".