15522214 has 4 divisors (see below), whose sum is σ = 23283324. Its totient is φ = 7761106.

The previous prime is 15522197. The next prime is 15522239. The reversal of 15522214 is 41222551.

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, 3880552 + ... + 3880555.

It is an arithmetic number, because the mean of its divisors is an integer number (5820831).

Almost surely, 2^15522214 is an apocalyptic number.

15522214 is a deficient number, since it is larger than the sum of its proper divisors (7761110).

15522214 is an equidigital number, since it uses as much as digits as its factorization.

15522214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7761109.

The product of its digits is 800, while the sum is 22.

The square root of 15522214 is about 3939.8241077490. The cubic root of 15522214 is about 249.4506015297.

Adding to 15522214 its reverse (41222551), we get a palindrome (56744765).

It can be divided in two parts, 155222 and 14, that added together give a square (155236 = 394²).

The spelling of 15522214 in words is "fifteen million, five hundred twenty-two thousand, two hundred fourteen".