557402 has 4 divisors (see below), whose sum is σ = 836106. Its totient is φ = 278700.

The previous prime is 557377. The next prime is 557423. The reversal of 557402 is 204755.

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., 326041 + 231361 = 571^2 + 481^2 .

It is an unprimeable number.

557402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139349 + ... + 139352.

2⁵⁵⁷⁴⁰² is an apocalyptic number.

557402 is a deficient number, since it is larger than the sum of its proper divisors (278704).

557402 is a wasteful number, since it uses less digits than its factorization.

557402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278703.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 557402 is about 746.5935976152. The cubic root of 557402 is about 82.2980429035.

It can be divided in two parts, 557 and 402, that added together give a palindrome (959).

The spelling of 557402 in words is "five hundred fifty-seven thousand, four hundred two".