15055906 has 4 divisors (see below), whose sum is σ = 22583862. Its totient is φ = 7527952.

The previous prime is 15055879. The next prime is 15055907. The reversal of 15055906 is 60955051.

It is a happy number.

15055906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 164025 = 3859^2 + 405^2 .

It is not an unprimeable number, because it can be changed into a prime (15055907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3763975 + ... + 3763978.

Almost surely, 2^15055906 is an apocalyptic number.

15055906 is a deficient number, since it is larger than the sum of its proper divisors (7527956).

15055906 is an equidigital number, since it uses as much as digits as its factorization.

15055906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527955.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 15055906 is about 3880.1940673116. The cubic root of 15055906 is about 246.9272187996.

The spelling of 15055906 in words is "fifteen million, fifty-five thousand, nine hundred six".