152501213 has 4 divisors (see below), whose sum is σ = 154011228. Its totient is φ = 150991200.

The previous prime is 152501191. The next prime is 152501231. The reversal of 152501213 is 312105251.

It is a happy number.

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 93180409 + 59320804 = 9653^2 + 7702^2 .

It is a cyclic number.

It is not a de Polignac number, because 152501213 - 2⁶ = 152501149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152501243) 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, 754856 + ... + 755057.

It is an arithmetic number, because the mean of its divisors is an integer number (38502807).

Almost surely, 2^152501213 is an apocalyptic number.

It is an amenable number.

152501213 is a deficient number, since it is larger than the sum of its proper divisors (1510015).

152501213 is a wasteful number, since it uses less digits than its factorization.

152501213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510014.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 152501213 is about 12349.1381480652. The cubic root of 152501213 is about 534.2662816024.

Adding to 152501213 its reverse (312105251), we get a palindrome (464606464).

The spelling of 152501213 in words is "one hundred fifty-two million, five hundred one thousand, two hundred thirteen".