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53131884 = 22313421809
BaseRepresentation
bin1100101010101…
…1101001101100
310200222101020120
43022223221230
5102100210014
65134444540
71213420311
oct312535154
9120871216
1053131884
1127a9a853
1215963750
13b013ab0
1470b0d08
1549e7ba9
hex32aba6c

53131884 has 48 divisors (see below), whose sum is σ = 133993440. Its totient is φ = 16289280.

The previous prime is 53131879. The next prime is 53131901. The reversal of 53131884 is 48813135.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65272 + ... + 66080.

It is an arithmetic number, because the mean of its divisors is an integer number (2791530).

Almost surely, 253131884 is an apocalyptic number.

It is an amenable number.

53131884 is an abundant number, since it is smaller than the sum of its proper divisors (80861556).

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

53131884 is a wasteful number, since it uses less digits than its factorization.

53131884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1248 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 53131884 is about 7289.1620917634. The cubic root of 53131884 is about 375.9398858928.

The spelling of 53131884 in words is "fifty-three million, one hundred thirty-one thousand, eight hundred eighty-four".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 421 809 842 1263 1618 1684 2427 2526 3236 4854 5052 5473 9708 10517 10946 16419 21034 21892 31551 32838 42068 63102 65676 126204 340589 681178 1021767 1362356 2043534 4087068 4427657 8855314 13282971 17710628 26565942 53131884