78761051 has 4 divisors (see below), whose sum is σ = 83394072. Its totient is φ = 74128032.

The previous prime is 78761029. The next prime is 78761063. The reversal of 78761051 is 15016787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78761051 - 2¹⁴ = 78744667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78760051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316485 + ... + 2316518.

It is an arithmetic number, because the mean of its divisors is an integer number (20848518).

Almost surely, 2^78761051 is an apocalyptic number.

78761051 is a deficient number, since it is larger than the sum of its proper divisors (4633021).

78761051 is a wasteful number, since it uses less digits than its factorization.

78761051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633020.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 78761051 is about 8874.7423061180. The cubic root of 78761051 is about 428.6509931273.

The spelling of 78761051 in words is "seventy-eight million, seven hundred sixty-one thousand, fifty-one".