78460051 has 4 divisors (see below), whose sum is σ = 81165600. Its totient is φ = 75754504.

The previous prime is 78460043. The next prime is 78460069. The reversal of 78460051 is 15006487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15006487 = 257 ⋅58391.

It is a cyclic number.

It is not a de Polignac number, because 78460051 - 2³ = 78460043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78459995 and 78460022.

It is not an unprimeable number, because it can be changed into a prime (78460451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352731 + ... + 1352788.

It is an arithmetic number, because the mean of its divisors is an integer number (20291400).

Almost surely, 2^78460051 is an apocalyptic number.

78460051 is a deficient number, since it is larger than the sum of its proper divisors (2705549).

78460051 is a wasteful number, since it uses less digits than its factorization.

78460051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705548.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 78460051 is about 8857.7678339410. The cubic root of 78460051 is about 428.1042395389.

The spelling of 78460051 in words is "seventy-eight million, four hundred sixty thousand, fifty-one".