57030705 has 12 divisors (see below), whose sum is σ = 98853300. Its totient is φ = 30416352.

The previous prime is 57030697. The next prime is 57030707. The reversal of 57030705 is 50703075.

It can be written as a sum of positive squares in 2 ways, for example, as 8714304 + 48316401 = 2952^2 + 6951^2 .

It is not a de Polignac number, because 57030705 - 2³ = 57030697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57030707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633630 + ... + 633719.

It is an arithmetic number, because the mean of its divisors is an integer number (8237775).

Almost surely, 2^57030705 is an apocalyptic number.

It is an amenable number.

57030705 is a deficient number, since it is larger than the sum of its proper divisors (41822595).

57030705 is a wasteful number, since it uses less digits than its factorization.

57030705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267360 (or 1267357 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 27.

The square root of 57030705 is about 7551.8676497937. The cubic root of 57030705 is about 384.9192049494.

It can be divided in two parts, 5703070 and 5, that added together give a palindrome (5703075).

The spelling of 57030705 in words is "fifty-seven million, thirty thousand, seven hundred five".