57270073 has 12 divisors (see below), whose sum is σ = 66864420. Its totient is φ = 48908832.

The previous prime is 57270019. The next prime is 57270077. The reversal of 57270073 is 37007275.

It can be written as a sum of positive squares in 2 ways, for example, as 42928704 + 14341369 = 6552^2 + 3787^2 .

It is a de Polignac number, because none of the positive numbers 2^k-57270073 is a prime.

It is a super-2 number, since 2×57270073² = 6559722522850658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57270077) 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 11 ways as a sum of consecutive naturals, for example, 12363 + ... + 16351.

It is an arithmetic number, because the mean of its divisors is an integer number (5572035).

Almost surely, 2^57270073 is an apocalyptic number.

It is an amenable number.

57270073 is a deficient number, since it is larger than the sum of its proper divisors (9594347).

57270073 is a wasteful number, since it uses less digits than its factorization.

57270073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4289 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 57270073 is about 7567.6993201369. The cubic root of 57270073 is about 385.4569780338.

The spelling of 57270073 in words is "fifty-seven million, two hundred seventy thousand, seventy-three".