78057951 has 16 divisors (see below), whose sum is σ = 106577760. Its totient is φ = 50803200.

The previous prime is 78057919. The next prime is 78057977. The reversal of 78057951 is 15975087.

It is not a de Polignac number, because 78057951 - 2⁵ = 78057919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20355 + ... + 23883.

It is an arithmetic number, because the mean of its divisors is an integer number (6661110).

Almost surely, 2^78057951 is an apocalyptic number.

78057951 is a deficient number, since it is larger than the sum of its proper divisors (28519809).

78057951 is a wasteful number, since it uses less digits than its factorization.

78057951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 78057951 is about 8835.0410864919. The cubic root of 78057951 is about 427.3716560109.

The spelling of 78057951 in words is "seventy-eight million, fifty-seven thousand, nine hundred fifty-one".