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51080349 = 317026783
BaseRepresentation
bin1100001011011…
…0110010011101
310120010011001210
43002312302131
5101034032344
65022455033
71160114205
oct302666235
9116104053
1051080349
1126919471
1215134479
13a776078
146ad9405
15473edb9
hex30b6c9d

51080349 has 4 divisors (see below), whose sum is σ = 68107136. Its totient is φ = 34053564.

The previous prime is 51080333. The next prime is 51080377. The reversal of 51080349 is 94308015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51080349 - 24 = 51080333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51080389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8513389 + ... + 8513394.

It is an arithmetic number, because the mean of its divisors is an integer number (17026784).

Almost surely, 251080349 is an apocalyptic number.

It is an amenable number.

51080349 is a deficient number, since it is larger than the sum of its proper divisors (17026787).

51080349 is a wasteful number, since it uses less digits than its factorization.

51080349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17026786.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51080349 is about 7147.0517697859. The cubic root of 51080349 is about 371.0376254757.

The spelling of 51080349 in words is "fifty-one million, eighty thousand, three hundred forty-nine".

Divisors: 1 3 17026783 51080349