78552231 has 8 divisors (see below), whose sum is σ = 105715584. Its totient is φ = 51878520.

The previous prime is 78552217. The next prime is 78552239. The reversal of 78552231 is 13225587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78552231 - 2¹⁸ = 78290087 is a prime.

It is a super-2 number, since 2×78552231² = 12340905990154722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78552192 and 78552201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78552239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122035 + ... + 122676.

It is an arithmetic number, because the mean of its divisors is an integer number (13214448).

Almost surely, 2^78552231 is an apocalyptic number.

78552231 is a deficient number, since it is larger than the sum of its proper divisors (27163353).

78552231 is a wasteful number, since it uses less digits than its factorization.

78552231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244821.

The product of its digits is 16800, while the sum is 33.

The square root of 78552231 is about 8862.9696490510. The cubic root of 78552231 is about 428.2718288787.

The spelling of 78552231 in words is "seventy-eight million, five hundred fifty-two thousand, two hundred thirty-one".