15052021 has 16 divisors (see below), whose sum is σ = 16632000. Its totient is φ = 13563648.

The previous prime is 15052003. The next prime is 15052027. The reversal of 15052021 is 12025051.

It is a cyclic number.

It is not a de Polignac number, because 15052021 - 2¹³ = 15043829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15051986 and 15052004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15052027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42955 + ... + 43303.

It is an arithmetic number, because the mean of its divisors is an integer number (1039500).

Almost surely, 2^15052021 is an apocalyptic number.

It is an amenable number.

15052021 is a deficient number, since it is larger than the sum of its proper divisors (1579979).

15052021 is a wasteful number, since it uses less digits than its factorization.

15052021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 15052021 is about 3879.6934157224. The cubic root of 15052021 is about 246.9059780814.

Adding to 15052021 its reverse (12025051), we get a palindrome (27077072).

The spelling of 15052021 in words is "fifteen million, fifty-two thousand, twenty-one".