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51048860 = 22510324781
BaseRepresentation
bin1100001010111…
…1000110011100
310120001112212112
43002233012130
5101032030420
65022053152
71156623332
oct302570634
9116045775
1051048860
11268a7845
121511a1b8
13a764935
146acbb52
1547358c5
hex30af19c

51048860 has 24 divisors (see below), whose sum is σ = 108247776. Its totient is φ = 20220480.

The previous prime is 51048857. The next prime is 51048871. The reversal of 51048860 is 6884015.

51048860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×510488602 = 5211972214599200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10331 + ... + 14450.

It is an arithmetic number, because the mean of its divisors is an integer number (4510324).

Almost surely, 251048860 is an apocalyptic number.

It is an amenable number.

51048860 is an abundant number, since it is smaller than the sum of its proper divisors (57198916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51048860 is a wasteful number, since it uses less digits than its factorization.

51048860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24893 (or 24891 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 51048860 is about 7144.8484938451. The cubic root of 51048860 is about 370.9613664990.

The spelling of 51048860 in words is "fifty-one million, forty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 103 206 412 515 1030 2060 24781 49562 99124 123905 247810 495620 2552443 5104886 10209772 12762215 25524430 51048860