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14312557 = 72292093
BaseRepresentation
bin110110100110…
…010001101101
3222221011010201
4312212101231
512131000212
61230433501
7232440400
oct66462155
928834121
1014312557
118096266
124962891
132c7178c
141c87d37
1513cab57
hexda646d

14312557 has 6 divisors (see below), whose sum is σ = 16649358. Its totient is φ = 12267864.

The previous prime is 14312513. The next prime is 14312561. The reversal of 14312557 is 75521341.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9357481 + 4955076 = 3059^2 + 2226^2 .

It is not a de Polignac number, because 14312557 - 27 = 14312429 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 (14312257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145998 + ... + 146095.

It is an arithmetic number, because the mean of its divisors is an integer number (2774893).

Almost surely, 214312557 is an apocalyptic number.

It is an amenable number.

14312557 is a deficient number, since it is larger than the sum of its proper divisors (2336801).

14312557 is an equidigital number, since it uses as much as digits as its factorization.

14312557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292107 (or 292100 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 14312557 is about 3783.1940209299. The cubic root of 14312557 is about 242.7946296672.

Adding to 14312557 its reverse (75521341), we get a palindrome (89833898).

The spelling of 14312557 in words is "fourteen million, three hundred twelve thousand, five hundred fifty-seven".

Divisors: 1 7 49 292093 2044651 14312557