557440146 has 24 divisors (see below), whose sum is σ = 1249435980. Its totient is φ = 179405856.

The previous prime is 557440139. The next prime is 557440153. The reversal of 557440146 is 641044755.

557440146 is a `hidden beast` number, since 5 + 574 + 40 + 1 + 46 = 666.

It is an interprime number because it is at equal distance from previous prime (557440139) and next prime (557440153).

It can be written as a sum of positive squares in 2 ways, for example, as 521619921 + 35820225 = 22839^2 + 5985^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 557440146.

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, 533425 + ... + 534468.

Almost surely, 2^557440146 is an apocalyptic number.

557440146 is an abundant number, since it is smaller than the sum of its proper divisors (691995834).

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

557440146 is a wasteful number, since it uses less digits than its factorization.

557440146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067930 (or 1067927 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 557440146 is about 23610.1703932860. The cubic root of 557440146 is about 822.9992022579. Note that the first 3 decimals are identical.

The spelling of 557440146 in words is "five hundred fifty-seven million, four hundred forty thousand, one hundred forty-six".