152475309 has 18 divisors (see below), whose sum is σ = 256200750. Its totient is φ = 87128496.

The previous prime is 152475287. The next prime is 152475331. The reversal of 152475309 is 903574251.

152475309 is a `hidden beast` number, since 152 + 475 + 30 + 9 = 666.

152475309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (152475287) and next prime (152475331).

It can be written as a sum of positive squares in only one way, i.e., 92102409 + 60372900 = 9597^2 + 7770^2 .

It is not a de Polignac number, because 152475309 - 2⁸ = 152475053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152475709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 172434 + ... + 173315.

It is an arithmetic number, because the mean of its divisors is an integer number (14233375).

Almost surely, 2^152475309 is an apocalyptic number.

It is an amenable number.

152475309 is a deficient number, since it is larger than the sum of its proper divisors (103725441).

152475309 is a wasteful number, since it uses less digits than its factorization.

152475309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345769 (or 345759 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 152475309 is about 12348.0892853915. The cubic root of 152475309 is about 534.2360295645.

The spelling of 152475309 in words is "one hundred fifty-two million, four hundred seventy-five thousand, three hundred nine".