57742189 has 4 divisors (see below), whose sum is σ = 57840156. Its totient is φ = 57644224.

The previous prime is 57742169. The next prime is 57742193. The reversal of 57742189 is 98124775.

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 15920100 + 41822089 = 3990^2 + 6467^2 .

It is a cyclic number.

It is not a de Polignac number, because 57742189 - 2¹¹ = 57740141 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 (57742169) 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, 48094 + ... + 49279.

It is an arithmetic number, because the mean of its divisors is an integer number (14460039).

Almost surely, 2^57742189 is an apocalyptic number.

It is an amenable number.

57742189 is a deficient number, since it is larger than the sum of its proper divisors (97967).

57742189 is an equidigital number, since it uses as much as digits as its factorization.

57742189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97966.

The product of its digits is 141120, while the sum is 43.

The square root of 57742189 is about 7598.8281333374. The cubic root of 57742189 is about 386.5132750503.

The spelling of 57742189 in words is "fifty-seven million, seven hundred forty-two thousand, one hundred eighty-nine".