152890091 has 4 divisors (see below), whose sum is σ = 153238800. Its totient is φ = 152541384.

The previous prime is 152890081. The next prime is 152890097. The reversal of 152890091 is 190098251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190098251 = 7 ⋅27156893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152890091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152890097) 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, 173696 + ... + 174573.

It is an arithmetic number, because the mean of its divisors is an integer number (38309700).

Almost surely, 2^152890091 is an apocalyptic number.

152890091 is a deficient number, since it is larger than the sum of its proper divisors (348709).

152890091 is an equidigital number, since it uses as much as digits as its factorization.

152890091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348708.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 152890091 is about 12364.8732706809. The cubic root of 152890091 is about 534.7200223717.

It can be divided in two parts, 1528 and 90091, that added together give a palindrome (91619).

The spelling of 152890091 in words is "one hundred fifty-two million, eight hundred ninety thousand, ninety-one".