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22553001 = 3215832
BaseRepresentation
bin101011000001…
…0000110101001
31120102210220100
41112002012221
521233144001
62123220013
7362461122
oct126020651
946383810
1022553001
1111804449
127677609
134898493
142dd1049
151ea7586
hex15821a9

22553001 has 9 divisors (see below), whose sum is σ = 32597149. Its totient is φ = 15025836.

The previous prime is 22552991. The next prime is 22553023. The reversal of 22553001 is 10035522.

It is a happy number.

The square root of 22553001 is 4749.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2k-22553001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22557001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13456 + ... + 15038.

Almost surely, 222553001 is an apocalyptic number.

22553001 is the 4749-th square number.

22553001 is the 2375-th centered octagonal number.

It is an amenable number.

22553001 is a deficient number, since it is larger than the sum of its proper divisors (10044148).

22553001 is an frugal number, since it uses more digits than its factorization.

22553001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The cubic root of 22553001 is about 282.5323052831.

Adding to 22553001 its reverse (10035522), we get a palindrome (32588523).

The spelling of 22553001 in words is "twenty-two million, five hundred fifty-three thousand, one".

Divisors: 1 3 9 1583 4749 14247 2505889 7517667 22553001