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23137453 = 197257457
BaseRepresentation
bin101100001000…
…0110010101101
31121112111121201
41120100302231
521410344303
62143525501
7400444063
oct130206255
947474551
1023137453
1112073569
1278b9891
134a41501
143104033
15207081d
hex1610cad

23137453 has 8 divisors (see below), whose sum is σ = 23396472. Its totient is φ = 22880256.

The previous prime is 23137451. The next prime is 23137463. The reversal of 23137453 is 35473132.

It can be written as a sum of positive squares in 4 ways, for example, as 20820969 + 2316484 = 4563^2 + 1522^2 .

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 23137453 - 21 = 23137451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23137451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50401 + ... + 50857.

It is an arithmetic number, because the mean of its divisors is an integer number (2924559).

Almost surely, 223137453 is an apocalyptic number.

It is an amenable number.

23137453 is a deficient number, since it is larger than the sum of its proper divisors (259019).

23137453 is a wasteful number, since it uses less digits than its factorization.

23137453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its digits is 7560, while the sum is 28.

The square root of 23137453 is about 4810.1406424345. The cubic root of 23137453 is about 284.9520920806.

The spelling of 23137453 in words is "twenty-three million, one hundred thirty-seven thousand, four hundred fifty-three".

Divisors: 1 197 257 457 50629 90029 117449 23137453