557148730 has 8 divisors (see below), whose sum is σ = 1002867732. Its totient is φ = 222859488.

The previous prime is 557148727. The next prime is 557148731. The reversal of 557148730 is 37841755.

It can be written as a sum of positive squares in 2 ways, for example, as 528494121 + 28654609 = 22989^2 + 5353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×557148730² = 620829414681225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557148731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27857427 + ... + 27857446.

Almost surely, 2^557148730 is an apocalyptic number.

557148730 is a deficient number, since it is larger than the sum of its proper divisors (445719002).

557148730 is a wasteful number, since it uses less digits than its factorization.

557148730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55714880.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 557148730 is about 23603.9981782748. The cubic root of 557148730 is about 822.8557626781.

The spelling of 557148730 in words is "five hundred fifty-seven million, one hundred forty-eight thousand, seven hundred thirty".