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23002553 = 723142873
BaseRepresentation
bin101011110111…
…1110110111001
31121021122120102
41113233312321
521342040203
62141005145
7366342560
oct127576671
947248512
1023002553
1111a91182
1278537b5
1349c4ca2
1430aabd7
152045888
hex15efdb9

23002553 has 8 divisors (see below), whose sum is σ = 27431808. Its totient is φ = 18859104.

The previous prime is 23002543. The next prime is 23002607. The reversal of 23002553 is 35520032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23002553 - 26 = 23002489 is a prime.

It is a Duffinian number.

23002553 is a modest number, since divided by 2553 gives 23 as remainder.

It is not an unprimeable number, because it can be changed into a prime (23002543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71276 + ... + 71597.

It is an arithmetic number, because the mean of its divisors is an integer number (3428976).

Almost surely, 223002553 is an apocalyptic number.

23002553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23002553 is a deficient number, since it is larger than the sum of its proper divisors (4429255).

23002553 is a wasteful number, since it uses less digits than its factorization.

23002553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142903.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 23002553 is about 4796.0976845765. The cubic root of 23002553 is about 284.3972199037.

Adding to 23002553 its reverse (35520032), we get a palindrome (58522585).

The spelling of 23002553 in words is "twenty-three million, two thousand, five hundred fifty-three".

Divisors: 1 7 23 161 142873 1000111 3286079 23002553