152288509 has 4 divisors (see below), whose sum is σ = 152332704. Its totient is φ = 152244316.

The previous prime is 152288503. The next prime is 152288519. The reversal of 152288509 is 905882251.

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: 905882251 = 29 ⋅31237319.

It is a cyclic number.

It is not a de Polignac number, because 152288509 - 2³ = 152288501 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152288501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16447 + ... + 23980.

It is an arithmetic number, because the mean of its divisors is an integer number (38083176).

Almost surely, 2^152288509 is an apocalyptic number.

It is an amenable number.

152288509 is a deficient number, since it is larger than the sum of its proper divisors (44195).

152288509 is an equidigital number, since it uses as much as digits as its factorization.

152288509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44194.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 152288509 is about 12340.5230440205. The cubic root of 152288509 is about 534.0177733053.

The spelling of 152288509 in words is "one hundred fifty-two million, two hundred eighty-eight thousand, five hundred nine".