15055881 has 4 divisors (see below), whose sum is σ = 20074512. Its totient is φ = 10037252.

The previous prime is 15055879. The next prime is 15055907. The reversal of 15055881 is 18855051.

15055881 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 15055881 - 2¹ = 15055879 is a prime.

It is a super-2 number, since 2×15055881² = 453359105372322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15055811) 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, 2509311 + ... + 2509316.

It is an arithmetic number, because the mean of its divisors is an integer number (5018628).

Almost surely, 2^15055881 is an apocalyptic number.

It is an amenable number.

15055881 is a deficient number, since it is larger than the sum of its proper divisors (5018631).

15055881 is an equidigital number, since it uses as much as digits as its factorization.

15055881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018630.

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 15055881 is about 3880.1908458219. The cubic root of 15055881 is about 246.9270821271.

The spelling of 15055881 in words is "fifteen million, fifty-five thousand, eight hundred eighty-one".