14991550 has 72 divisors (see below), whose sum is σ = 33714360. Its totient is φ = 4939200.

The previous prime is 14991541. The next prime is 14991553. The reversal of 14991550 is 5519941.

It is a happy number.

14991550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991553) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70945 + ... + 71155.

It is an arithmetic number, because the mean of its divisors is an integer number (468255).

Almost surely, 2^14991550 is an apocalyptic number.

14991550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14991550 is an abundant number, since it is smaller than the sum of its proper divisors (18722810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14991550 is a wasteful number, since it uses less digits than its factorization.

14991550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 14991550 is about 3871.8923022212. The cubic root of 14991550 is about 246.5748887521.

The spelling of 14991550 in words is "fourteen million, nine hundred ninety-one thousand, five hundred fifty".