78974055 has 16 divisors (see below), whose sum is σ = 140398560. Its totient is φ = 42119424.

The previous prime is 78974041. The next prime is 78974069. The reversal of 78974055 is 55047987.

It is an interprime number because it is at equal distance from previous prime (78974041) and next prime (78974069).

It is not a de Polignac number, because 78974055 - 2⁶ = 78973991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78974055.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 292362 + ... + 292631.

It is an arithmetic number, because the mean of its divisors is an integer number (8774910).

Almost surely, 2^78974055 is an apocalyptic number.

78974055 is a deficient number, since it is larger than the sum of its proper divisors (61424505).

78974055 is a wasteful number, since it uses less digits than its factorization.

78974055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585007 (or 585001 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 78974055 is about 8886.7347771833. The cubic root of 78974055 is about 429.0370646249.

The spelling of 78974055 in words is "seventy-eight million, nine hundred seventy-four thousand, fifty-five".