22856257 has 2 divisors, whose sum is σ = 22856258. Its totient is φ = 22856256.

The previous prime is 22856213. The next prime is 22856293. The reversal of 22856257 is 75265822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22743361 + 112896 = 4769^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 22856257 - 2⁷ = 22856129 is a prime.

It is not a weakly prime, because it can be changed into another prime (22856657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11428128 + 11428129.

It is an arithmetic number, because the mean of its divisors is an integer number (11428129).

Almost surely, 2^22856257 is an apocalyptic number.

It is an amenable number.

22856257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22856257 is an equidigital number, since it uses as much as digits as its factorization.

22856257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 22856257 is about 4780.8217912823. The cubic root of 22856257 is about 283.7930160483.

The spelling of 22856257 in words is "twenty-two million, eight hundred fifty-six thousand, two hundred fifty-seven".