22487501 has 2 divisors, whose sum is σ = 22487502. Its totient is φ = 22487500.

The previous prime is 22487489. The next prime is 22487513. The reversal of 22487501 is 10578422.

It is a balanced prime because it is at equal distance from previous prime (22487489) and next prime (22487513).

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 491401 = 4690^2 + 701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22487501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22487551) 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, 11243750 + 11243751.

It is an arithmetic number, because the mean of its divisors is an integer number (11243751).

Almost surely, 2^22487501 is an apocalyptic number.

It is an amenable number.

22487501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22487501 is an equidigital number, since it uses as much as digits as its factorization.

22487501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 22487501 is about 4742.0987969463. The cubic root of 22487501 is about 282.2585233844.

The spelling of 22487501 in words is "twenty-two million, four hundred eighty-seven thousand, five hundred one".