79151513 has 6 divisors (see below), whose sum is σ = 92074266. Its totient is φ = 67844112.

The previous prime is 79151489. The next prime is 79151521. The reversal of 79151513 is 31515197.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43665664 + 35485849 = 6608^2 + 5957^2 .

It is not a de Polignac number, because 79151513 - 2¹⁴ = 79135129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79151513.

It is not an unprimeable number, because it can be changed into a prime (79151543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 807620 + ... + 807717.

It is an arithmetic number, because the mean of its divisors is an integer number (15345711).

Almost surely, 2^79151513 is an apocalyptic number.

It is an amenable number.

79151513 is a deficient number, since it is larger than the sum of its proper divisors (12922753).

79151513 is a wasteful number, since it uses less digits than its factorization.

79151513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615351 (or 1615344 counting only the distinct ones).

The product of its digits is 4725, while the sum is 32.

The square root of 79151513 is about 8896.7136067202. The cubic root of 79151513 is about 429.3581789602.

The spelling of 79151513 in words is "seventy-nine million, one hundred fifty-one thousand, five hundred thirteen".