78526253 has 8 divisors (see below), whose sum is σ = 85439928. Its totient is φ = 71737344.

The previous prime is 78526249. The next prime is 78526267. The reversal of 78526253 is 35262587.

It can be written as a sum of positive squares in 4 ways, for example, as 769129 + 77757124 = 877^2 + 8818^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 78526253 - 2² = 78526249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78526223) 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, 29876 + ... + 32397.

It is an arithmetic number, because the mean of its divisors is an integer number (10679991).

Almost surely, 2^78526253 is an apocalyptic number.

It is an amenable number.

78526253 is a deficient number, since it is larger than the sum of its proper divisors (6913675).

78526253 is a wasteful number, since it uses less digits than its factorization.

78526253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62383.

The product of its digits is 100800, while the sum is 38.

The square root of 78526253 is about 8861.5039919869. The cubic root of 78526253 is about 428.2246124296.

The spelling of 78526253 in words is "seventy-eight million, five hundred twenty-six thousand, two hundred fifty-three".