22685501 has 2 divisors, whose sum is σ = 22685502. Its totient is φ = 22685500.

The previous prime is 22685491. The next prime is 22685513. The reversal of 22685501 is 10558622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 454276 = 4715^2 + 674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22685501 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 (22685581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11342750 + 11342751.

It is an arithmetic number, because the mean of its divisors is an integer number (11342751).

Almost surely, 2^22685501 is an apocalyptic number.

It is an amenable number.

22685501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22685501 is an equidigital number, since it uses as much as digits as its factorization.

22685501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 22685501 is about 4762.9298756123. The cubic root of 22685501 is about 283.0845223610.

The spelling of 22685501 in words is "twenty-two million, six hundred eighty-five thousand, five hundred one".