78380051 has 8 divisors (see below), whose sum is σ = 79183104. Its totient is φ = 77580360.

The previous prime is 78380041. The next prime is 78380053. The reversal of 78380051 is 15008387.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78380051 is a prime.

It is a super-2 number, since 2×78380051² = 12286864789525202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78380053) 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, 94826 + ... + 95648.

It is an arithmetic number, because the mean of its divisors is an integer number (9897888).

Almost surely, 2^78380051 is an apocalyptic number.

78380051 is a deficient number, since it is larger than the sum of its proper divisors (803053).

78380051 is a wasteful number, since it uses less digits than its factorization.

78380051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 78380051 is about 8853.2508718549. The cubic root of 78380051 is about 427.9586878197.

The spelling of 78380051 in words is "seventy-eight million, three hundred eighty thousand, fifty-one".