79022257 has 2 divisors, whose sum is σ = 79022258. Its totient is φ = 79022256.

The previous prime is 79022231. The next prime is 79022287. The reversal of 79022257 is 75222097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 34386496 = 6681^2 + 5864^2 .

It is a cyclic number.

It is not a de Polignac number, because 79022257 - 2¹⁵ = 78989489 is a prime.

It is not a weakly prime, because it can be changed into another prime (79022287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39511128 + 39511129.

It is an arithmetic number, because the mean of its divisors is an integer number (39511129).

Almost surely, 2^79022257 is an apocalyptic number.

It is an amenable number.

79022257 is a deficient number, since it is larger than the sum of its proper divisors (1).

79022257 is an equidigital number, since it uses as much as digits as its factorization.

79022257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 79022257 is about 8889.4463832119. The cubic root of 79022257 is about 429.1243347989.

The spelling of 79022257 in words is "seventy-nine million, twenty-two thousand, two hundred fifty-seven".