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5251143 = 31750381
BaseRepresentation
bin10100000010000001000111
3100212210012210
4110002001013
52321014033
6304314503
762430312
oct24020107
910783183
105251143
112a67297
121912a33
13111b1b1
149a9979
156dad63
hex502047

5251143 has 4 divisors (see below), whose sum is σ = 7001528. Its totient is φ = 3500760.

The previous prime is 5251139. The next prime is 5251189. The reversal of 5251143 is 3411525.

5251143 is digitally balanced in base 3, 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.

It is not a de Polignac number, because 5251143 - 22 = 5251139 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875188 + ... + 875193.

It is an arithmetic number, because the mean of its divisors is an integer number (1750382).

Almost surely, 25251143 is an apocalyptic number.

5251143 is a deficient number, since it is larger than the sum of its proper divisors (1750385).

5251143 is a wasteful number, since it uses less digits than its factorization.

5251143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750384.

The product of its digits is 600, while the sum is 21.

The square root of 5251143 is about 2291.5372569522. The cubic root of 5251143 is about 173.8139443401.

Adding to 5251143 its reverse (3411525), we get a palindrome (8662668).

The spelling of 5251143 in words is "five million, two hundred fifty-one thousand, one hundred forty-three".

Divisors: 1 3 1750381 5251143