78797253 has 4 divisors (see below), whose sum is σ = 105063008. Its totient is φ = 52531500.

The previous prime is 78797249. The next prime is 78797267. The reversal of 78797253 is 35279787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78797253 - 2² = 78797249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78790253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13132873 + ... + 13132878.

It is an arithmetic number, because the mean of its divisors is an integer number (26265752).

Almost surely, 2^78797253 is an apocalyptic number.

It is an amenable number.

78797253 is a deficient number, since it is larger than the sum of its proper divisors (26265755).

78797253 is a wasteful number, since it uses less digits than its factorization.

78797253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26265754.

The product of its digits is 740880, while the sum is 48.

The square root of 78797253 is about 8876.7816803164. The cubic root of 78797253 is about 428.7166586057.

The spelling of 78797253 in words is "seventy-eight million, seven hundred ninety-seven thousand, two hundred fifty-three".