152531133 has 4 divisors (see below), whose sum is σ = 203374848. Its totient is φ = 101687420.

The previous prime is 152531081. The next prime is 152531149. The reversal of 152531133 is 331135251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331135251 = 3 ⋅110378417.

It is a cyclic number.

It is not a de Polignac number, because 152531133 - 2⁸ = 152530877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152531153) 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, 25421853 + ... + 25421858.

It is an arithmetic number, because the mean of its divisors is an integer number (50843712).

Almost surely, 2^152531133 is an apocalyptic number.

It is an amenable number.

152531133 is a deficient number, since it is larger than the sum of its proper divisors (50843715).

152531133 is an equidigital number, since it uses as much as digits as its factorization.

152531133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50843714.

The product of its digits is 1350, while the sum is 24.

The square root of 152531133 is about 12350.3495092244. The cubic root of 152531133 is about 534.3012194707.

Adding to 152531133 its reverse (331135251), we get a palindrome (483666384).

The spelling of 152531133 in words is "one hundred fifty-two million, five hundred thirty-one thousand, one hundred thirty-three".