152157891 has 4 divisors (see below), whose sum is σ = 202877192. Its totient is φ = 101438592.

The previous prime is 152157881. The next prime is 152157893. The reversal of 152157891 is 198751251.

152157891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198751251 = 3 ⋅66250417.

It is not a de Polignac number, because 152157891 - 2¹⁵ = 152125123 is a prime.

It is a super-3 number, since 3×152157891³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152157893) 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, 25359646 + ... + 25359651.

It is an arithmetic number, because the mean of its divisors is an integer number (50719298).

Almost surely, 2^152157891 is an apocalyptic number.

152157891 is a deficient number, since it is larger than the sum of its proper divisors (50719301).

152157891 is an equidigital number, since it uses as much as digits as its factorization.

152157891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50719300.

The product of its digits is 25200, while the sum is 39.

The square root of 152157891 is about 12335.2296695278. The cubic root of 152157891 is about 533.8650537826.

The spelling of 152157891 in words is "one hundred fifty-two million, one hundred fifty-seven thousand, eight hundred ninety-one".