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23225501 = 132532593
BaseRepresentation
bin101100010011…
…0010010011101
31121200222101202
41120212102131
521421204001
62145445245
7401261555
oct130462235
947628352
1023225501
1112123732
127940825
134a72600
143128165
15208b96b
hex162649d

23225501 has 12 divisors (see below), whose sum is σ = 25633908. Its totient is φ = 21026304.

The previous prime is 23225459. The next prime is 23225507. The reversal of 23225501 is 10552232.

It can be written as a sum of positive squares in 6 ways, for example, as 1144900 + 22080601 = 1070^2 + 4699^2 .

It is not a de Polignac number, because 23225501 - 222 = 19031197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23225507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7661 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (2136159).

Almost surely, 223225501 is an apocalyptic number.

It is an amenable number.

23225501 is a deficient number, since it is larger than the sum of its proper divisors (2408407).

23225501 is a wasteful number, since it uses less digits than its factorization.

23225501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23225501 is about 4819.2842829615. The cubic root of 23225501 is about 285.3130898030.

Adding to 23225501 its reverse (10552232), we get a palindrome (33777733).

The spelling of 23225501 in words is "twenty-three million, two hundred twenty-five thousand, five hundred one".

Divisors: 1 13 53 169 689 2593 8957 33709 137429 438217 1786577 23225501