57421587 has 8 divisors (see below), whose sum is σ = 76812736. Its totient is φ = 38155752.

The previous prime is 57421577. The next prime is 57421601. The reversal of 57421587 is 78512475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57421587 - 2¹⁶ = 57356051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57421577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30253 + ... + 32094.

It is an arithmetic number, because the mean of its divisors is an integer number (9601592).

Almost surely, 2^57421587 is an apocalyptic number.

57421587 is a deficient number, since it is larger than the sum of its proper divisors (19391149).

57421587 is a wasteful number, since it uses less digits than its factorization.

57421587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62657.

The product of its digits is 78400, while the sum is 39.

The square root of 57421587 is about 7577.7032800183. The cubic root of 57421587 is about 385.7966010287.

The spelling of 57421587 in words is "fifty-seven million, four hundred twenty-one thousand, five hundred eighty-seven".