57130945 has 4 divisors (see below), whose sum is σ = 68557140. Its totient is φ = 45704752.

The previous prime is 57130943. The next prime is 57131003. The reversal of 57130945 is 54903175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15295921 + 41835024 = 3911^2 + 6468^2 .

It is a cyclic number.

It is not a de Polignac number, because 57130945 - 2¹ = 57130943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57130945.

It is not an unprimeable number, because it can be changed into a prime (57130943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5713090 + ... + 5713099.

It is an arithmetic number, because the mean of its divisors is an integer number (17139285).

Almost surely, 2^57130945 is an apocalyptic number.

It is an amenable number.

57130945 is a deficient number, since it is larger than the sum of its proper divisors (11426195).

57130945 is a wasteful number, since it uses less digits than its factorization.

57130945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11426194.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 57130945 is about 7558.5015049281. The cubic root of 57130945 is about 385.1445906561.

The spelling of 57130945 in words is "fifty-seven million, one hundred thirty thousand, nine hundred forty-five".