57074221 has 2 divisors, whose sum is σ = 57074222. Its totient is φ = 57074220.

The previous prime is 57074209. The next prime is 57074263. The reversal of 57074221 is 12247075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 373321 = 7530^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 57074221 - 2⁷ = 57074093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57074221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57774221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28537110 + 28537111.

It is an arithmetic number, because the mean of its divisors is an integer number (28537111).

Almost surely, 2^57074221 is an apocalyptic number.

It is an amenable number.

57074221 is a deficient number, since it is larger than the sum of its proper divisors (1).

57074221 is an equidigital number, since it uses as much as digits as its factorization.

57074221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57074221 is about 7554.7482419999. The cubic root of 57074221 is about 385.0170813808.

The spelling of 57074221 in words is "fifty-seven million, seventy-four thousand, two hundred twenty-one".