15220051 has 16 divisors (see below), whose sum is σ = 19111680. Its totient is φ = 11774880.

The previous prime is 15220031. The next prime is 15220067. The reversal of 15220051 is 15002251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15220051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15220031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11460 + ... + 12718.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 2^15220051 is an apocalyptic number.

15220051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15220051 is a deficient number, since it is larger than the sum of its proper divisors (3891629).

15220051 is a wasteful number, since it uses less digits than its factorization.

15220051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434.

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

The square root of 15220051 is about 3901.2883769340. The cubic root of 15220051 is about 247.8213409313.

It can be divided in two parts, 152200 and 51, that added together give a palindrome (152251).

The spelling of 15220051 in words is "fifteen million, two hundred twenty thousand, fifty-one".