78051051 has 12 divisors (see below), whose sum is σ = 121412928. Its totient is φ = 48031344.

The previous prime is 78051037. The next prime is 78051053. The reversal of 78051051 is 15015087.

It is not a de Polignac number, because 78051051 - 2¹¹ = 78049003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78051053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333435 + ... + 333668.

It is an arithmetic number, because the mean of its divisors is an integer number (10117744).

Almost surely, 2^78051051 is an apocalyptic number.

78051051 is a deficient number, since it is larger than the sum of its proper divisors (43361877).

78051051 is a wasteful number, since it uses less digits than its factorization.

78051051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667122 (or 667119 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 78051051 is about 8834.6505873181. The cubic root of 78051051 is about 427.3590630110.

The spelling of 78051051 in words is "seventy-eight million, fifty-one thousand, fifty-one".