79501057 has 4 divisors (see below), whose sum is σ = 79699716. Its totient is φ = 79302400.

The previous prime is 79501031. The next prime is 79501069. The reversal of 79501057 is 75010597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75010597 = 251 ⋅298847.

It can be written as a sum of positive squares in 2 ways, for example, as 64064016 + 15437041 = 8004^2 + 3929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79501057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79501157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98728 + ... + 99529.

It is an arithmetic number, because the mean of its divisors is an integer number (19924929).

Almost surely, 2^79501057 is an apocalyptic number.

It is an amenable number.

79501057 is a deficient number, since it is larger than the sum of its proper divisors (198659).

79501057 is a wasteful number, since it uses less digits than its factorization.

79501057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198658.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 79501057 is about 8916.3365234832. The cubic root of 79501057 is about 429.9892858336.

The spelling of 79501057 in words is "seventy-nine million, five hundred one thousand, fifty-seven".