122564587 has 2 divisors, whose sum is σ = 122564588. Its totient is φ = 122564586.

The previous prime is 122564581. The next prime is 122564593. The reversal of 122564587 is 785465221.

It is a balanced prime because it is at equal distance from previous prime (122564581) and next prime (122564593).

It is an emirp because it is prime and its reverse (785465221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122564587 is a prime.

It is not a weakly prime, because it can be changed into another prime (122564581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61282293 + 61282294.

It is an arithmetic number, because the mean of its divisors is an integer number (61282294).

Almost surely, 2^122564587 is an apocalyptic number.

122564587 is a deficient number, since it is larger than the sum of its proper divisors (1).

122564587 is an equidigital number, since it uses as much as digits as its factorization.

122564587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 122564587 is about 11070.8891693486. The cubic root of 122564587 is about 496.7314625511.

The spelling of 122564587 in words is "one hundred twenty-two million, five hundred sixty-four thousand, five hundred eighty-seven".