15215054 has 4 divisors (see below), whose sum is σ = 22822584. Its totient is φ = 7607526.

The previous prime is 15215033. The next prime is 15215063. The reversal of 15215054 is 45051251.

It is a happy number.

15215054 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3803762 + ... + 3803765.

It is an arithmetic number, because the mean of its divisors is an integer number (5705646).

Almost surely, 2^15215054 is an apocalyptic number.

15215054 is a deficient number, since it is larger than the sum of its proper divisors (7607530).

15215054 is an equidigital number, since it uses as much as digits as its factorization.

15215054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607529.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 15215054 is about 3900.6478949016. The cubic root of 15215054 is about 247.7942166510.

The spelling of 15215054 in words is "fifteen million, two hundred fifteen thousand, fifty-four".