57002269 has 4 divisors (see below), whose sum is σ = 57783196. Its totient is φ = 56221344.

The previous prime is 57002263. The next prime is 57002291. The reversal of 57002269 is 96220075.

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 17123044 + 39879225 = 4138^2 + 6315^2 .

It is a cyclic number.

It is not a de Polignac number, because 57002269 - 2¹¹ = 57000221 is a prime.

It is a super-2 number, since 2×57002269² = 6498517342296722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57002269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57002263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390354 + ... + 390499.

It is an arithmetic number, because the mean of its divisors is an integer number (14445799).

Almost surely, 2^57002269 is an apocalyptic number.

It is an amenable number.

57002269 is a deficient number, since it is larger than the sum of its proper divisors (780927).

57002269 is an equidigital number, since it uses as much as digits as its factorization.

57002269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780926.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57002269 is about 7549.9847019713. The cubic root of 57002269 is about 384.8552196383.

The spelling of 57002269 in words is "fifty-seven million, two thousand, two hundred sixty-nine".