78995051 has 4 divisors (see below), whose sum is σ = 79014312. Its totient is φ = 78975792.

The previous prime is 78995011. The next prime is 78995053. The reversal of 78995051 is 15059987.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78995051 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 78994993 and 78995011.

It is not an unprimeable number, because it can be changed into a prime (78995053) 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, 746 + ... + 12591.

It is an arithmetic number, because the mean of its divisors is an integer number (19753578).

Almost surely, 2^78995051 is an apocalyptic number.

78995051 is a deficient number, since it is larger than the sum of its proper divisors (19261).

78995051 is a wasteful number, since it uses less digits than its factorization.

78995051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19260.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 78995051 is about 8887.9160099542. The cubic root of 78995051 is about 429.0750824441.

The spelling of 78995051 in words is "seventy-eight million, nine hundred ninety-five thousand, fifty-one".