15001013 has 4 divisors (see below), whose sum is σ = 15790560. Its totient is φ = 14211468.

The previous prime is 15001001. The next prime is 15001027. The reversal of 15001013 is 31010051.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31010051 = 269 ⋅115279.

It is not a de Polignac number, because 15001013 - 2¹⁸ = 14738869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15000985 and 15001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15001043) 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, 394745 + ... + 394782.

It is an arithmetic number, because the mean of its divisors is an integer number (3947640).

Almost surely, 2^15001013 is an apocalyptic number.

It is an amenable number.

15001013 is a deficient number, since it is larger than the sum of its proper divisors (789547).

15001013 is an equidigital number, since it uses as much as digits as its factorization.

15001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789546.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 15001013 is about 3873.1141217372. The cubic root of 15001013 is about 246.6267590255.

Adding to 15001013 its reverse (31010051), we get a palindrome (46011064).

The spelling of 15001013 in words is "fifteen million, one thousand, thirteen".