22615487 has 2 divisors, whose sum is σ = 22615488. Its totient is φ = 22615486.

The previous prime is 22615451. The next prime is 22615493. The reversal of 22615487 is 78451622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22615487 - 2¹⁸ = 22353343 is a prime.

It is a super-2 number, since 2×22615487² = 1022920504494338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22615427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11307743 + 11307744.

It is an arithmetic number, because the mean of its divisors is an integer number (11307744).

Almost surely, 2^22615487 is an apocalyptic number.

22615487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615487 is an equidigital number, since it uses as much as digits as its factorization.

22615487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 22615487 is about 4755.5743081146. The cubic root of 22615487 is about 282.7929954112.

The spelling of 22615487 in words is "twenty-two million, six hundred fifteen thousand, four hundred eighty-seven".