15222541 has 2 divisors, whose sum is σ = 15222542. Its totient is φ = 15222540.

The previous prime is 15222539. The next prime is 15222547. The reversal of 15222541 is 14522251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10426441 + 4796100 = 3229^2 + 2190^2 .

It is a cyclic number.

It is not a de Polignac number, because 15222541 - 2¹ = 15222539 is a prime.

Together with 15222539, 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 (15222547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7611270 + 7611271.

It is an arithmetic number, because the mean of its divisors is an integer number (7611271).

Almost surely, 2^15222541 is an apocalyptic number.

It is an amenable number.

15222541 is a deficient number, since it is larger than the sum of its proper divisors (1).

15222541 is an equidigital number, since it uses as much as digits as its factorization.

15222541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 15222541 is about 3901.6074892280. The cubic root of 15222541 is about 247.8348547163.

Adding to 15222541 its reverse (14522251), we get a palindrome (29744792).

The spelling of 15222541 in words is "fifteen million, two hundred twenty-two thousand, five hundred forty-one".