15272121 has 8 divisors (see below), whose sum is σ = 20386240. Its totient is φ = 10169712.

The previous prime is 15272113. The next prime is 15272129. The reversal of 15272121 is 12127251.

It is an interprime number because it is at equal distance from previous prime (15272113) and next prime (15272129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15272121 - 2³ = 15272113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15272129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795 + ... + 5583.

It is an arithmetic number, because the mean of its divisors is an integer number (2548280).

Almost surely, 2^15272121 is an apocalyptic number.

It is an amenable number.

15272121 is a deficient number, since it is larger than the sum of its proper divisors (5114119).

15272121 is a wasteful number, since it uses less digits than its factorization.

15272121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its digits is 280, while the sum is 21.

The square root of 15272121 is about 3907.9561154138. The cubic root of 15272121 is about 248.1036301645.

Adding to 15272121 its reverse (12127251), we get a palindrome (27399372).

The spelling of 15272121 in words is "fifteen million, two hundred seventy-two thousand, one hundred twenty-one".