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50055031 = 133850387
BaseRepresentation
bin1011111011110…
…0011101110111
310111012001121001
42332330131313
5100303230111
64544504131
71145314015
oct276743567
9114161531
1050055031
11262890a4
121491b047
13a4a7480
14690d8b5
1545db1c1
hex2fbc777

50055031 has 4 divisors (see below), whose sum is σ = 53905432. Its totient is φ = 46204632.

The previous prime is 50054999. The next prime is 50055037. The reversal of 50055031 is 13055005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13055005 = 52611001.

It is a cyclic number.

It is not a de Polignac number, because 50055031 - 25 = 50054999 is a prime.

It is a super-2 number, since 2×500550312 = 5011012256821922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50055037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925181 + ... + 1925206.

It is an arithmetic number, because the mean of its divisors is an integer number (13476358).

Almost surely, 250055031 is an apocalyptic number.

50055031 is a deficient number, since it is larger than the sum of its proper divisors (3850401).

50055031 is a wasteful number, since it uses less digits than its factorization.

50055031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850400.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 50055031 is about 7074.9580210769. The cubic root of 50055031 is about 368.5382576003.

The spelling of 50055031 in words is "fifty million, fifty-five thousand, thirty-one".

Divisors: 1 13 3850387 50055031