158020851 has 4 divisors (see below), whose sum is σ = 210694472. Its totient is φ = 105347232.

The previous prime is 158020843. The next prime is 158020859.

158020851 is nontrivially palindromic in base 10.

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

It is an interprime number because it is at equal distance from previous prime (158020843) and next prime (158020859).

It is not a de Polignac number, because 158020851 - 2³ = 158020843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158020859) 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, 26336806 + ... + 26336811.

It is an arithmetic number, because the mean of its divisors is an integer number (52673618).

Almost surely, 2^158020851 is an apocalyptic number.

158020851 is a deficient number, since it is larger than the sum of its proper divisors (52673621).

158020851 is an equidigital number, since it uses as much as digits as its factorization.

158020851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52673620.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 158020851 is about 12570.6344708610. The cubic root of 158020851 is about 540.6357977551.

The spelling of 158020851 in words is "one hundred fifty-eight million, twenty thousand, eight hundred fifty-one".