78470051 has 8 divisors (see below), whose sum is σ = 87219504. Its totient is φ = 69989920.

The previous prime is 78470033. The next prime is 78470053. The reversal of 78470051 is 15007487.

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

It is not a de Polignac number, because 78470051 - 2⁶ = 78469987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78470053) 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, 66716 + ... + 67881.

It is an arithmetic number, because the mean of its divisors is an integer number (10902438).

Almost surely, 2^78470051 is an apocalyptic number.

78470051 is a deficient number, since it is larger than the sum of its proper divisors (8749453).

78470051 is a wasteful number, since it uses less digits than its factorization.

78470051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134661.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 78470051 is about 8858.3322922546. The cubic root of 78470051 is about 428.1224265461.

The spelling of 78470051 in words is "seventy-eight million, four hundred seventy thousand, fifty-one".