78080251 has 4 divisors (see below), whose sum is σ = 78126400. Its totient is φ = 78034104.

The previous prime is 78080213. The next prime is 78080257. The reversal of 78080251 is 15208087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78080251 - 2⁹ = 78079739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78080257) 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, 20436 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (19531600).

Almost surely, 2^78080251 is an apocalyptic number.

78080251 is a deficient number, since it is larger than the sum of its proper divisors (46149).

78080251 is a wasteful number, since it uses less digits than its factorization.

78080251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46148.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 78080251 is about 8836.3030165336. The cubic root of 78080251 is about 427.4123500525.

The spelling of 78080251 in words is "seventy-eight million, eighty thousand, two hundred fifty-one".