57421165 has 8 divisors (see below), whose sum is σ = 68955768. Its totient is φ = 45903360.

The previous prime is 57421163. The next prime is 57421183. The reversal of 57421165 is 56112475.

It can be written as a sum of positive squares in 4 ways, for example, as 1261129 + 56160036 = 1123^2 + 7494^2 .

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

It is not a de Polignac number, because 57421165 - 2¹ = 57421163 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 (57421163) 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, 5269 + ... + 11941.

It is an arithmetic number, because the mean of its divisors is an integer number (8619471).

Almost surely, 2^57421165 is an apocalyptic number.

It is an amenable number.

57421165 is a deficient number, since it is larger than the sum of its proper divisors (11534603).

57421165 is a wasteful number, since it uses less digits than its factorization.

57421165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8399.

The product of its digits is 8400, while the sum is 31.

The square root of 57421165 is about 7577.6754351186. The cubic root of 57421165 is about 385.7956559337.

The spelling of 57421165 in words is "fifty-seven million, four hundred twenty-one thousand, one hundred sixty-five".