57742452 has 18 divisors (see below), whose sum is σ = 145960178. Its totient is φ = 19247472.

The previous prime is 57742381. The next prime is 57742453. The reversal of 57742452 is 25424775.

It is a happy number.

57742452 is a `hidden beast` number, since 577 + 42 + 45 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48525156 + 9217296 = 6966^2 + 3036^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1603957 = 57742452 / (5 + 7 + 7 + 4 + 2 + 4 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57742453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801943 + ... + 802014.

Almost surely, 2^57742452 is an apocalyptic number.

It is an amenable number.

57742452 is an abundant number, since it is smaller than the sum of its proper divisors (88217726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57742452 is a wasteful number, since it uses less digits than its factorization.

57742452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603967 (or 1603962 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 57742452 is about 7598.8454386176. The cubic root of 57742452 is about 386.5138618705.

The spelling of 57742452 in words is "fifty-seven million, seven hundred forty-two thousand, four hundred fifty-two".