15500455 has 8 divisors (see below), whose sum is σ = 18855792. Its totient is φ = 12230208.

The previous prime is 15500449. The next prime is 15500467. The reversal of 15500455 is 55400551.

15500455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 15500455 - 2⁵ = 15500423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20869 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (2356974).

Almost surely, 2^15500455 is an apocalyptic number.

15500455 is a deficient number, since it is larger than the sum of its proper divisors (3355337).

15500455 is an equidigital number, since it uses as much as digits as its factorization.

15500455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42545.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 15500455 is about 3937.0617216396. The cubic root of 15500455 is about 249.3339872838. Note that the first 3 decimals are identical.

The spelling of 15500455 in words is "fifteen million, five hundred thousand, four hundred fifty-five".