57072227 has 2 divisors, whose sum is σ = 57072228. Its totient is φ = 57072226.

The previous prime is 57072199. The next prime is 57072259. The reversal of 57072227 is 72227075.

It is an a-pointer prime, because the next prime (57072259) can be obtained adding 57072227 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57072227 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57072193 and 57072202.

It is not a weakly prime, because it can be changed into another prime (57072277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28536113 + 28536114.

It is an arithmetic number, because the mean of its divisors is an integer number (28536114).

Almost surely, 2^57072227 is an apocalyptic number.

57072227 is a deficient number, since it is larger than the sum of its proper divisors (1).

57072227 is an equidigital number, since it uses as much as digits as its factorization.

57072227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 57072227 is about 7554.6162708638. The cubic root of 57072227 is about 385.0125975526.

The spelling of 57072227 in words is "fifty-seven million, seventy-two thousand, two hundred twenty-seven".