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51482141 = 2712701
BaseRepresentation
bin1100010001100…
…0111000011101
310120212120012222
43010120320131
5101134412031
65035235125
71163406464
oct304307035
9116776188
1051482141
1127073327
12152a8aa5
13a886c09
146ba19db
1547bde7b
hex3118e1d

51482141 has 6 divisors (see below), whose sum is σ = 51746526. Its totient is φ = 51219000.

The previous prime is 51482131. The next prime is 51482143. The reversal of 51482141 is 14128415.

It can be written as a sum of positive squares in only one way, i.e., 49646116 + 1836025 = 7046^2 + 1355^2 .

It is a de Polignac number, because none of the positive numbers 2k-51482141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51482141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51482143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73091 + ... + 73791.

It is an arithmetic number, because the mean of its divisors is an integer number (8624421).

Almost surely, 251482141 is an apocalyptic number.

It is an amenable number.

51482141 is a deficient number, since it is larger than the sum of its proper divisors (264385).

51482141 is an frugal number, since it uses more digits than its factorization.

51482141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 972 counting only the distinct ones).

The product of its digits is 1280, while the sum is 26.

The square root of 51482141 is about 7175.1056438216. The cubic root of 51482141 is about 372.0079318654.

The spelling of 51482141 in words is "fifty-one million, four hundred eighty-two thousand, one hundred forty-one".

Divisors: 1 271 701 73441 189971 51482141