78276253 has 4 divisors (see below), whose sum is σ = 85392288. Its totient is φ = 71160220.

The previous prime is 78276229. The next prime is 78276259. The reversal of 78276253 is 35267287.

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 a cyclic number.

It is not a de Polignac number, because 78276253 - 2¹⁷ = 78145181 is a prime.

It is a super-2 number, since 2×78276253² = 12254343567440018, 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 (78276259) 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, 3558001 + ... + 3558022.

It is an arithmetic number, because the mean of its divisors is an integer number (21348072).

Almost surely, 2^78276253 is an apocalyptic number.

It is an amenable number.

78276253 is a deficient number, since it is larger than the sum of its proper divisors (7116035).

78276253 is a wasteful number, since it uses less digits than its factorization.

78276253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116034.

The product of its digits is 141120, while the sum is 40.

The square root of 78276253 is about 8847.3867893294. The cubic root of 78276253 is about 427.7696904126.

The spelling of 78276253 in words is "seventy-eight million, two hundred seventy-six thousand, two hundred fifty-three".