158978051 has 4 divisors (see below), whose sum is σ = 159017232. Its totient is φ = 158938872.

The previous prime is 158978023. The next prime is 158978077. The reversal of 158978051 is 150879851.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158978051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158977993 and 158978011.

It is not an unprimeable number, because it can be changed into a prime (158978851) 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, 12695 + ... + 21888.

It is an arithmetic number, because the mean of its divisors is an integer number (39754308).

Almost surely, 2^158978051 is an apocalyptic number.

158978051 is a deficient number, since it is larger than the sum of its proper divisors (39181).

158978051 is an equidigital number, since it uses as much as digits as its factorization.

158978051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39180.

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 158978051 is about 12608.6498484176. The cubic root of 158978051 is about 541.7252218934.

The spelling of 158978051 in words is "one hundred fifty-eight million, nine hundred seventy-eight thousand, fifty-one".