15222851 has 4 divisors (see below), whose sum is σ = 17397552. Its totient is φ = 13048152.

The previous prime is 15222839. The next prime is 15222887. The reversal of 15222851 is 15822251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15822251 = 67 ⋅236153.

It is a cyclic number.

It is not a de Polignac number, because 15222851 - 2¹⁴ = 15206467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15222851.

It is not an unprimeable number, because it can be changed into a prime (15122851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087340 + ... + 1087353.

It is an arithmetic number, because the mean of its divisors is an integer number (4349388).

Almost surely, 2^15222851 is an apocalyptic number.

15222851 is a deficient number, since it is larger than the sum of its proper divisors (2174701).

15222851 is an equidigital number, since it uses as much as digits as its factorization.

15222851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174700.

The product of its digits is 1600, while the sum is 26.

The square root of 15222851 is about 3901.6472162409. The cubic root of 15222851 is about 247.8365370523.

The spelling of 15222851 in words is "fifteen million, two hundred twenty-two thousand, eight hundred fifty-one".