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51682292 = 2229445537
BaseRepresentation
bin1100010100100…
…1101111110100
310121020201202222
43011021233310
5101212313132
65043421512
71165202144
oct305115764
9117221688
1051682292
112719a742
1215384898
13a92704c
146c14924
15480d412
hex3149bf4

51682292 has 12 divisors (see below), whose sum is σ = 93562980. Its totient is φ = 24950016.

The previous prime is 51682283. The next prime is 51682307. The reversal of 51682292 is 29228615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34409956 + 17272336 = 5866^2 + 4156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222653 + ... + 222884.

It is an arithmetic number, because the mean of its divisors is an integer number (7796915).

Almost surely, 251682292 is an apocalyptic number.

It is an amenable number.

51682292 is a deficient number, since it is larger than the sum of its proper divisors (41880688).

51682292 is a wasteful number, since it uses less digits than its factorization.

51682292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445570 (or 445568 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 51682292 is about 7189.0397133414. The cubic root of 51682292 is about 372.4894028786.

The spelling of 51682292 in words is "fifty-one million, six hundred eighty-two thousand, two hundred ninety-two".

Divisors: 1 2 4 29 58 116 445537 891074 1782148 12920573 25841146 51682292