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55906956 = 2233773951
BaseRepresentation
bin1101010101000…
…1001010001100
310220012100221000
43111101022030
5103303010311
65314140300
71246126020
oct325211214
9126170830
1055906956
11296157a6
1216881690
13b775c51
1475d4380
154d95056
hex355128c

55906956 has 48 divisors (see below), whose sum is σ = 165652480. Its totient is φ = 15973200.

The previous prime is 55906943. The next prime is 55906969. The reversal of 55906956 is 65960955.

55906956 is a `hidden beast` number, since 5 + 590 + 6 + 9 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (55906943) and next prime (55906969).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36220 + ... + 37731.

Almost surely, 255906956 is an apocalyptic number.

It is an amenable number.

55906956 is an abundant number, since it is smaller than the sum of its proper divisors (109745524).

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

55906956 is a wasteful number, since it uses less digits than its factorization.

55906956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73971 (or 73963 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The square root of 55906956 is about 7477.0954253640. The cubic root of 55906956 is about 382.3742300842.

The spelling of 55906956 in words is "fifty-five million, nine hundred six thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 252 378 756 73951 147902 221853 295804 443706 517657 665559 887412 1035314 1331118 1552971 1996677 2070628 2662236 3105942 3993354 4658913 6211884 7986708 9317826 13976739 18635652 27953478 55906956