557203440 has 80 divisors (see below), whose sum is σ = 1732487328. Its totient is φ = 148144128.

The previous prime is 557203429. The next prime is 557203447. The reversal of 557203440 is 44302755.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 557203398 and 557203407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557203447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81432 + ... + 88008.

Almost surely, 2^557203440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866243664).

557203440 is an abundant number, since it is smaller than the sum of its proper divisors (1175283888).

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

557203440 is a wasteful number, since it uses less digits than its factorization.

557203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946 (or 6940 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 557203440 is about 23605.1570636588. The cubic root of 557203440 is about 822.8826956213.

The spelling of 557203440 in words is "five hundred fifty-seven million, two hundred three thousand, four hundred forty".