57331402 has 4 divisors (see below), whose sum is σ = 85997106. Its totient is φ = 28665700.

The previous prime is 57331381. The next prime is 57331409. The reversal of 57331402 is 20413375.

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

It can be written as a sum of positive squares in only one way, i.e., 50680161 + 6651241 = 7119^2 + 2579^2 .

It is not an unprimeable number, because it can be changed into a prime (57331409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14332849 + ... + 14332852.

Almost surely, 2^57331402 is an apocalyptic number.

57331402 is a deficient number, since it is larger than the sum of its proper divisors (28665704).

57331402 is a wasteful number, since it uses less digits than its factorization.

57331402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28665703.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 57331402 is about 7571.7502600125. The cubic root of 57331402 is about 385.5945208283.

Adding to 57331402 its reverse (20413375), we get a palindrome (77744777).

The spelling of 57331402 in words is "fifty-seven million, three hundred thirty-one thousand, four hundred two".