79554455 has 4 divisors (see below), whose sum is σ = 95465352. Its totient is φ = 63643560.

The previous prime is 79554439. The next prime is 79554457. The reversal of 79554455 is 55445597.

It is a happy number.

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

It is not a de Polignac number, because 79554455 - 2⁴ = 79554439 is a prime.

It is a super-2 number, since 2×79554455² = 12657822620694050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79554457) 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, 7955441 + ... + 7955450.

It is an arithmetic number, because the mean of its divisors is an integer number (23866338).

Almost surely, 2^79554455 is an apocalyptic number.

79554455 is a deficient number, since it is larger than the sum of its proper divisors (15910897).

79554455 is a wasteful number, since it uses less digits than its factorization.

79554455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15910896.

The product of its digits is 630000, while the sum is 44.

The square root of 79554455 is about 8919.3304120881. The cubic root of 79554455 is about 430.0855337330.

The spelling of 79554455 in words is "seventy-nine million, five hundred fifty-four thousand, four hundred fifty-five".