57030066 has 24 divisors (see below), whose sum is σ = 127827180. Its totient is φ = 18354336.

The previous prime is 57030013. The next prime is 57030073. The reversal of 57030066 is 66003075.

Added to its reverse (66003075) it gives a triangular number (123033141 = T₁₅₆₈₆).

57030066 is a `hidden beast` number, since 570 + 30 + 0 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56927025 + 103041 = 7545^2 + 321^2 .

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, 54105 + ... + 55148.

Almost surely, 2^57030066 is an apocalyptic number.

57030066 is an abundant number, since it is smaller than the sum of its proper divisors (70797114).

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

57030066 is a wasteful number, since it uses less digits than its factorization.

57030066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109290 (or 109287 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 57030066 is about 7551.8253422600. The cubic root of 57030066 is about 384.9177673361.

Adding to 57030066 its reverse (66003075), we get a triangular number (123033141 = T₁₅₆₈₆).

The spelling of 57030066 in words is "fifty-seven million, thirty thousand, sixty-six".