79145245 has 4 divisors (see below), whose sum is σ = 94974300. Its totient is φ = 63316192.

The previous prime is 79145237. The next prime is 79145249. The reversal of 79145245 is 54254197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37491129 + 41654116 = 6123^2 + 6454^2 .

It is a cyclic number.

It is not a de Polignac number, because 79145245 - 2³ = 79145237 is a prime.

It is a super-2 number, since 2×79145245² = 12527939612220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79145249) 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, 7914520 + ... + 7914529.

It is an arithmetic number, because the mean of its divisors is an integer number (23743575).

Almost surely, 2^79145245 is an apocalyptic number.

It is an amenable number.

79145245 is a deficient number, since it is larger than the sum of its proper divisors (15829055).

79145245 is a wasteful number, since it uses less digits than its factorization.

79145245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15829054.

The product of its digits is 50400, while the sum is 37.

The square root of 79145245 is about 8896.3613348380. The cubic root of 79145245 is about 429.3468450513.

The spelling of 79145245 in words is "seventy-nine million, one hundred forty-five thousand, two hundred forty-five".