79505531 has 4 divisors (see below), whose sum is σ = 90863472. Its totient is φ = 68147592.

The previous prime is 79505507. The next prime is 79505539. The reversal of 79505531 is 13550597.

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

It is a cyclic number.

It is not a de Polignac number, because 79505531 - 2¹⁰ = 79504507 is a prime.

It is a super-2 number, since 2×79505531² = 12642258919183922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79505491 and 79505500.

It is not an unprimeable number, because it can be changed into a prime (79505539) 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, 5678960 + ... + 5678973.

It is an arithmetic number, because the mean of its divisors is an integer number (22715868).

Almost surely, 2^79505531 is an apocalyptic number.

79505531 is a deficient number, since it is larger than the sum of its proper divisors (11357941).

79505531 is a wasteful number, since it uses less digits than its factorization.

79505531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357940.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 79505531 is about 8916.5874077474. The cubic root of 79505531 is about 429.9973517053.

The spelling of 79505531 in words is "seventy-nine million, five hundred five thousand, five hundred thirty-one".