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312550055 = 51011633797
BaseRepresentation
bin10010101000010…
…010001010100111
3210210010012001222
4102220102022213
51120003100210
651003010555
710513426436
oct2250221247
9723105058
10312550055
11150476534
1288809a5b
134c9a327c
142d71d11d
151c68c655
hex12a122a7

312550055 has 16 divisors (see below), whose sum is σ = 381197664. Its totient is φ = 245980800.

The previous prime is 312550037. The next prime is 312550061. The reversal of 312550055 is 550055213.

It is not a de Polignac number, because 312550055 - 28 = 312549799 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 80417 + ... + 84213.

It is an arithmetic number, because the mean of its divisors is an integer number (23824854).

Almost surely, 2312550055 is an apocalyptic number.

312550055 is a deficient number, since it is larger than the sum of its proper divisors (68647609).

312550055 is a wasteful number, since it uses less digits than its factorization.

312550055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 312550055 is about 17679.0852421725. The cubic root of 312550055 is about 678.6406342607.

The spelling of 312550055 in words is "three hundred twelve million, five hundred fifty thousand, fifty-five".

Divisors: 1 5 101 163 505 815 3797 16463 18985 82315 383497 618911 1917485 3094555 62510011 312550055