22651501 has 2 divisors, whose sum is σ = 22651502. Its totient is φ = 22651500.

The previous prime is 22651487. The next prime is 22651507. The reversal of 22651501 is 10515622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17015625 + 5635876 = 4125^2 + 2374^2 .

It is a cyclic number.

It is not a de Polignac number, because 22651501 - 2⁵ = 22651469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22651507) 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, 11325750 + 11325751.

It is an arithmetic number, because the mean of its divisors is an integer number (11325751).

Almost surely, 2^22651501 is an apocalyptic number.

It is an amenable number.

22651501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22651501 is an equidigital number, since it uses as much as digits as its factorization.

22651501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 22651501 is about 4759.3593056209. The cubic root of 22651501 is about 282.9430269009.

The spelling of 22651501 in words is "twenty-two million, six hundred fifty-one thousand, five hundred one".