158391253 has 4 divisors (see below), whose sum is σ = 160171020. Its totient is φ = 156611488.

The previous prime is 158391251. The next prime is 158391257. The reversal of 158391253 is 352193851.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 112720689 + 45670564 = 10617^2 + 6758^2 .

It is a cyclic number.

It is not a de Polignac number, because 158391253 - 2¹ = 158391251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158391251) 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, 889750 + ... + 889927.

It is an arithmetic number, because the mean of its divisors is an integer number (40042755).

Almost surely, 2^158391253 is an apocalyptic number.

It is an amenable number.

158391253 is a deficient number, since it is larger than the sum of its proper divisors (1779767).

158391253 is an equidigital number, since it uses as much as digits as its factorization.

158391253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779766.

The product of its digits is 32400, while the sum is 37.

The square root of 158391253 is about 12585.3586758582. The cubic root of 158391253 is about 541.0578861872.

The spelling of 158391253 in words is "one hundred fifty-eight million, three hundred ninety-one thousand, two hundred fifty-three".