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51956051 = 719390647
BaseRepresentation
bin1100011000110…
…0100101010011
310121202122022012
43012030211103
5101300043201
65053333135
71200422240
oct306144523
9117678265
1051956051
1127367394
12154971ab
13a9c1834
146c865c7
1548645bb
hex318c953

51956051 has 8 divisors (see below), whose sum is σ = 62503680. Its totient is φ = 42189768.

The previous prime is 51956039. The next prime is 51956053. The reversal of 51956051 is 15065915.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-51956051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51955999 and 51956017.

It is not an unprimeable number, because it can be changed into a prime (51956053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195191 + ... + 195456.

It is an arithmetic number, because the mean of its divisors is an integer number (7812960).

Almost surely, 251956051 is an apocalyptic number.

51956051 is a deficient number, since it is larger than the sum of its proper divisors (10547629).

51956051 is a wasteful number, since it uses less digits than its factorization.

51956051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390673.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 51956051 is about 7208.0545919131. The cubic root of 51956051 is about 373.1459321121.

The spelling of 51956051 in words is "fifty-one million, nine hundred fifty-six thousand, fifty-one".

Divisors: 1 7 19 133 390647 2734529 7422293 51956051