557430 has 32 divisors (see below), whose sum is σ = 1417824. Its totient is φ = 139776.

The previous prime is 557423. The next prime is 557443. The reversal of 557430 is 34755.

It is a self number, because there is not a number n which added to its sum of digits gives 557430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (44307).

2⁵⁵⁷⁴³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708912).

557430 is an abundant number, since it is smaller than the sum of its proper divisors (860394).

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

557430 is a wasteful number, since it uses less digits than its factorization.

557430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 557430 is about 746.6123492148. The cubic root of 557430 is about 82.2994209076.

The spelling of 557430 in words is "five hundred fifty-seven thousand, four hundred thirty".