15252481 has 4 divisors (see below), whose sum is σ = 15268864. Its totient is φ = 15236100.

The previous prime is 15252467. The next prime is 15252509. The reversal of 15252481 is 18425251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15252481 - 2⁵ = 15252449 is a prime.

It is a super-2 number, since 2×15252481² = 465276353310722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15252431) 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, 6705 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (3817216).

Almost surely, 2^15252481 is an apocalyptic number.

It is an amenable number.

15252481 is a deficient number, since it is larger than the sum of its proper divisors (16383).

15252481 is an equidigital number, since it uses as much as digits as its factorization.

15252481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16382.

The product of its digits is 3200, while the sum is 28.

The square root of 15252481 is about 3905.4424845336. The cubic root of 15252481 is about 247.9972305015.

The spelling of 15252481 in words is "fifteen million, two hundred fifty-two thousand, four hundred eighty-one".