22147501 has 2 divisors, whose sum is σ = 22147502. Its totient is φ = 22147500.

The previous prime is 22147441. The next prime is 22147513. The reversal of 22147501 is 10574122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15413476 + 6734025 = 3926^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 22147501 - 2¹³ = 22139309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22157501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11073750 + 11073751.

It is an arithmetic number, because the mean of its divisors is an integer number (11073751).

Almost surely, 2^22147501 is an apocalyptic number.

It is an amenable number.

22147501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22147501 is an equidigital number, since it uses as much as digits as its factorization.

22147501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22147501 is about 4706.1131520608. The cubic root of 22147501 is about 280.8287563251.

The spelling of 22147501 in words is "twenty-two million, one hundred forty-seven thousand, five hundred one".