15021073 has 4 divisors (see below), whose sum is σ = 15032628. Its totient is φ = 15009520.

The previous prime is 15021049. The next prime is 15021103. The reversal of 15021073 is 37012051.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11068929 + 3952144 = 3327^2 + 1988^2 .

It is a cyclic number.

It is not a de Polignac number, because 15021073 - 2⁹ = 15020561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15021073.

It is not an unprimeable number, because it can be changed into a prime (15021173) 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, 3538 + ... + 6523.

It is an arithmetic number, because the mean of its divisors is an integer number (3758157).

Almost surely, 2^15021073 is an apocalyptic number.

It is an amenable number.

15021073 is a deficient number, since it is larger than the sum of its proper divisors (11555).

15021073 is a wasteful number, since it uses less digits than its factorization.

15021073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11554.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 15021073 is about 3875.7029039904. The cubic root of 15021073 is about 246.7366433638.

The spelling of 15021073 in words is "fifteen million, twenty-one thousand, seventy-three".