152541209 has 4 divisors (see below), whose sum is σ = 154051620. Its totient is φ = 151030800.

The previous prime is 152541199. The next prime is 152541223. The reversal of 152541209 is 902145251.

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 91623184 + 60918025 = 9572^2 + 7805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152541209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152541409) 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, 755054 + ... + 755255.

It is an arithmetic number, because the mean of its divisors is an integer number (38512905).

Almost surely, 2^152541209 is an apocalyptic number.

It is an amenable number.

152541209 is a deficient number, since it is larger than the sum of its proper divisors (1510411).

152541209 is a wasteful number, since it uses less digits than its factorization.

152541209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510410.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 152541209 is about 12350.7574261662. The cubic root of 152541209 is about 534.3129842832.

The spelling of 152541209 in words is "one hundred fifty-two million, five hundred forty-one thousand, two hundred nine".