15220069 has 2 divisors, whose sum is σ = 15220070. Its totient is φ = 15220068.

The previous prime is 15220067. The next prime is 15220081. The reversal of 15220069 is 96002251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 5579044 = 3105^2 + 2362^2 .

It is an emirp because it is prime and its reverse (96002251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15220069 - 2¹ = 15220067 is a prime.

It is a super-2 number, since 2×15220069² = 463301000729522, which contains 22 as substring.

Together with 15220067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15220067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7610034 + 7610035.

It is an arithmetic number, because the mean of its divisors is an integer number (7610035).

Almost surely, 2^15220069 is an apocalyptic number.

It is an amenable number.

15220069 is a deficient number, since it is larger than the sum of its proper divisors (1).

15220069 is an equidigital number, since it uses as much as digits as its factorization.

15220069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 15220069 is about 3901.2906838635. The cubic root of 15220069 is about 247.8214386266.

The spelling of 15220069 in words is "fifteen million, two hundred twenty thousand, sixty-nine".