57531494 has 4 divisors (see below), whose sum is σ = 86297244. Its totient is φ = 28765746.

The previous prime is 57531473. The next prime is 57531499. The reversal of 57531494 is 49413575.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57531499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14382872 + ... + 14382875.

It is an arithmetic number, because the mean of its divisors is an integer number (21574311).

Almost surely, 2^57531494 is an apocalyptic number.

57531494 is a deficient number, since it is larger than the sum of its proper divisors (28765750).

57531494 is a wasteful number, since it uses less digits than its factorization.

57531494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28765749.

The product of its digits is 75600, while the sum is 38.

The square root of 57531494 is about 7584.9518126353. The cubic root of 57531494 is about 386.0425870487.

The spelling of 57531494 in words is "fifty-seven million, five hundred thirty-one thousand, four hundred ninety-four".