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23055529 = 72470521
BaseRepresentation
bin101011111110…
…0110010101001
31121101100020111
41113330302221
521400234104
62142054321
7366653200
oct127746251
947340214
1023055529
1112017a62
12787a3a1
134a13133
1430c2237
152056404
hex15fcca9

23055529 has 6 divisors (see below), whose sum is σ = 26819754. Its totient is φ = 19761840.

The previous prime is 23055511. The next prime is 23055533. The reversal of 23055529 is 92555032.

It can be written as a sum of positive squares in only one way, i.e., 22992025 + 63504 = 4795^2 + 252^2 .

It is not a de Polignac number, because 23055529 - 25 = 23055497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23055529.

It is not an unprimeable number, because it can be changed into a prime (23055509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235212 + ... + 235309.

It is an arithmetic number, because the mean of its divisors is an integer number (4469959).

Almost surely, 223055529 is an apocalyptic number.

It is an amenable number.

23055529 is a deficient number, since it is larger than the sum of its proper divisors (3764225).

23055529 is an equidigital number, since it uses as much as digits as its factorization.

23055529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470535 (or 470528 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 23055529 is about 4801.6173316915. The cubic root of 23055529 is about 284.6153793954.

The spelling of 23055529 in words is "twenty-three million, fifty-five thousand, five hundred twenty-nine".

Divisors: 1 7 49 470521 3293647 23055529