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50240905 = 51113292423
BaseRepresentation
bin1011111110100…
…1110110001001
310111112111120021
42333221312021
5100330202110
64552500441
71150016641
oct277516611
9114474507
1050240905
11263a5810
12149aa721
13a540c60
14695b521
1546262da
hex2fe9d89

50240905 has 32 divisors (see below), whose sum is σ = 73301760. Its totient is φ = 32551680.

The previous prime is 50240903. The next prime is 50240909. The reversal of 50240905 is 50904205.

It is not a de Polignac number, because 50240905 - 21 = 50240903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50240905.

It is not an unprimeable number, because it can be changed into a prime (50240903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19524 + ... + 21946.

It is an arithmetic number, because the mean of its divisors is an integer number (2290680).

Almost surely, 250240905 is an apocalyptic number.

50240905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50240905 is a deficient number, since it is larger than the sum of its proper divisors (23060855).

50240905 is a wasteful number, since it uses less digits than its factorization.

50240905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 50240905 is about 7088.0818985110. The cubic root of 50240905 is about 368.9938699001.

The spelling of 50240905 in words is "fifty million, two hundred forty thousand, nine hundred five".

Divisors: 1 5 11 13 29 55 65 143 145 319 377 715 1595 1885 2423 4147 12115 20735 26653 31499 70267 133265 157495 346489 351335 772937 913471 1732445 3864685 4567355 10048181 50240905