556522 has 4 divisors (see below), whose sum is σ = 834786. Its totient is φ = 278260.

The previous prime is 556519. The next prime is 556537. The reversal of 556522 is 225655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225655 = 5 ⋅45131.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 95481 = 679^2 + 309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139129 + ... + 139132.

2⁵⁵⁶⁵²² is an apocalyptic number.

556522 is a deficient number, since it is larger than the sum of its proper divisors (278264).

556522 is a wasteful number, since it uses less digits than its factorization.

556522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278263.

The product of its digits is 3000, while the sum is 25.

The square root of 556522 is about 746.0040214369. The cubic root of 556522 is about 82.2547106684.

The spelling of 556522 in words is "five hundred fifty-six thousand, five hundred twenty-two".