557406 has 24 divisors (see below), whose sum is σ = 1221480. Its totient is φ = 183696.

The previous prime is 557377. The next prime is 557423. The reversal of 557406 is 604755.

It is a self number, because there is not a number n which added to its sum of digits gives 557406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3025 + ... + 3203.

It is an arithmetic number, because the mean of its divisors is an integer number (50895).

2⁵⁵⁷⁴⁰⁶ is an apocalyptic number.

557406 is an abundant number, since it is smaller than the sum of its proper divisors (664074).

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

557406 is a wasteful number, since it uses less digits than its factorization.

557406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 557406 is about 746.5962764440. The cubic root of 557406 is about 82.2982397641.

The spelling of 557406 in words is "five hundred fifty-seven thousand, four hundred six".