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51552955 = 510310591
BaseRepresentation
bin1100010010101…
…0001010111011
310121000011100201
43010222022323
5101144143310
65040543031
71164123106
oct304521273
9117004321
1051552955
1127111553
1215321a77
13a8b020c
146bbd73d
1547d4e3a
hex312a2bb

51552955 has 4 divisors (see below), whose sum is σ = 61863552. Its totient is φ = 41242360.

The previous prime is 51552953. The next prime is 51553009. The reversal of 51552955 is 55925515.

51552955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55925515 = 511185103.

It is not a de Polignac number, because 51552955 - 21 = 51552953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51552953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5155291 + ... + 5155300.

It is an arithmetic number, because the mean of its divisors is an integer number (15465888).

Almost surely, 251552955 is an apocalyptic number.

51552955 is a deficient number, since it is larger than the sum of its proper divisors (10310597).

51552955 is a wasteful number, since it uses less digits than its factorization.

51552955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310596.

The product of its digits is 56250, while the sum is 37.

The square root of 51552955 is about 7180.0386489210. The cubic root of 51552955 is about 372.1784201157.

The spelling of 51552955 in words is "fifty-one million, five hundred fifty-two thousand, nine hundred fifty-five".

Divisors: 1 5 10310591 51552955