15013481 has 4 divisors (see below), whose sum is σ = 17158272. Its totient is φ = 12868692.

The previous prime is 15013463. The next prime is 15013483. The reversal of 15013481 is 18431051.

15013481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15013481 - 2¹⁴ = 14997097 is a prime.

It is a super-2 number, since 2×15013481² = 450809223474722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15013483) 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, 1072385 + ... + 1072398.

It is an arithmetic number, because the mean of its divisors is an integer number (4289568).

Almost surely, 2^15013481 is an apocalyptic number.

It is an amenable number.

15013481 is a deficient number, since it is larger than the sum of its proper divisors (2144791).

15013481 is an equidigital number, since it uses as much as digits as its factorization.

15013481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144790.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 15013481 is about 3874.7233449628. The cubic root of 15013481 is about 246.6950675439.

It can be divided in two parts, 150 and 13481, that added together give a palindrome (13631).

The spelling of 15013481 in words is "fifteen million, thirteen thousand, four hundred eighty-one".