152520431 has 4 divisors (see below), whose sum is σ = 174309072. Its totient is φ = 130731792.

The previous prime is 152520427. The next prime is 152520437. The reversal of 152520431 is 134025251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152520431 - 2² = 152520427 is a prime.

It is a super-2 number, since 2×152520431² = 46524963744851522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 152520397 and 152520406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152520437) 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, 10894310 + ... + 10894323.

It is an arithmetic number, because the mean of its divisors is an integer number (43577268).

Almost surely, 2^152520431 is an apocalyptic number.

152520431 is a deficient number, since it is larger than the sum of its proper divisors (21788641).

152520431 is an equidigital number, since it uses as much as digits as its factorization.

152520431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21788640.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 152520431 is about 12349.9162345337. The cubic root of 152520431 is about 534.2887231685.

Adding to 152520431 its reverse (134025251), we get a palindrome (286545682).

The spelling of 152520431 in words is "one hundred fifty-two million, five hundred twenty thousand, four hundred thirty-one".