152520405 has 24 divisors (see below), whose sum is σ = 249389472. Its totient is φ = 79596192.

The previous prime is 152520377. The next prime is 152520421. The reversal of 152520405 is 504025251.

It is a happy number.

152520405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152520405 - 2⁹ = 152519893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30834 + ... + 35436.

It is an arithmetic number, because the mean of its divisors is an integer number (10391228).

Almost surely, 2^152520405 is an apocalyptic number.

152520405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

152520405 is a deficient number, since it is larger than the sum of its proper divisors (96869067).

152520405 is an equidigital number, since it uses as much as digits as its factorization.

152520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 152520405 is about 12349.9151818950. The cubic root of 152520405 is about 534.2886928086.

Adding to 152520405 its reverse (504025251), we get a palindrome (656545656).

The spelling of 152520405 in words is "one hundred fifty-two million, five hundred twenty thousand, four hundred five".