78856253 has 16 divisors (see below), whose sum is σ = 91914240. Its totient is φ = 66257136.

The previous prime is 78856199. The next prime is 78856321. The reversal of 78856253 is 35265887.

It is a cyclic number.

It is not a de Polignac number, because 78856253 - 2¹⁴ = 78839869 is a prime.

It is a Duffinian number.

Its product of digits (403200) is a multiple of the sum of its prime divisors (896).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78850253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179408 + ... + 179846.

It is an arithmetic number, because the mean of its divisors is an integer number (5744640).

Almost surely, 2^78856253 is an apocalyptic number.

It is an amenable number.

78856253 is a deficient number, since it is larger than the sum of its proper divisors (13057987).

78856253 is a wasteful number, since it uses less digits than its factorization.

78856253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 403200, while the sum is 44.

The square root of 78856253 is about 8880.1043349726. The cubic root of 78856253 is about 428.8236334533.

The spelling of 78856253 in words is "seventy-eight million, eight hundred fifty-six thousand, two hundred fifty-three".