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55667000278 = 283417333667
BaseRepresentation
bin110011110110000000…
…110000001111010110
312022200112021121120001
4303312000300033112
51403001223002103
641323441001514
74010323460311
oct636600601726
9168615247501
1055667000278
112167663025a
12a95692329a
135331b55526
1429a1219978
1516ac15101d
hexcf60303d6

55667000278 has 8 divisors (see below), whose sum is σ = 83501751672. Its totient is φ = 27833083056.

The previous prime is 55667000251. The next prime is 55667000287. The reversal of 55667000278 is 87200076655.

55667000278 is a nontrivial binomial coefficient, being equal to C(333668, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 333667.

It is an arithmetic number, because the mean of its divisors is an integer number (10437718959).

Almost surely, 255667000278 is an apocalyptic number.

55667000278 is the 333667-th triangular number and also the 166834-th hexagonal number.

55667000278 is the 111223-rd centered nonagonal number.

55667000278 is a deficient number, since it is larger than the sum of its proper divisors (27834751394).

55667000278 is a wasteful number, since it uses less digits than its factorization.

55667000278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417086.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 55667000278 in words is "fifty-five billion, six hundred sixty-seven million, two hundred seventy-eight", and thus it is an aban number.

Divisors: 1 2 83417 166834 333667 667334 27833500139 55667000278