79051957 has 2 divisors, whose sum is σ = 79051958. Its totient is φ = 79051956.

The previous prime is 79051859. The next prime is 79051967. The reversal of 79051957 is 75915097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79014321 + 37636 = 8889^2 + 194^2 .

It is an emirp because it is prime and its reverse (75915097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79051957 - 2¹⁵ = 79019189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79051967) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39525978 + 39525979.

It is an arithmetic number, because the mean of its divisors is an integer number (39525979).

Almost surely, 2^79051957 is an apocalyptic number.

It is an amenable number.

79051957 is a deficient number, since it is larger than the sum of its proper divisors (1).

79051957 is an equidigital number, since it uses as much as digits as its factorization.

79051957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99225, while the sum is 43.

The square root of 79051957 is about 8891.1167465060. The cubic root of 79051957 is about 429.1780892593.

It can be divided in two parts, 79051 and 957, that added together give a palindrome (80008).

The spelling of 79051957 in words is "seventy-nine million, fifty-one thousand, nine hundred fifty-seven".