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4997251 = 729103239
BaseRepresentation
bin10011000100000010000011
3100101212221101
4103010002003
52234403001
6255035231
760322150
oct23040203
910355841
104997251
112903566
12180bb17
13105c76c
14941227
1568aa01
hex4c4083

4997251 has 16 divisors (see below), whose sum is σ = 5990400. Its totient is φ = 4078368.

The previous prime is 4997243. The next prime is 4997273. The reversal of 4997251 is 1527994.

It is not a de Polignac number, because 4997251 - 23 = 4997243 is a prime.

It is a Duffinian number.

Its product of digits (22680) is a multiple of the sum of its prime divisors (378).

It is a self number, because there is not a number n which added to its sum of digits gives 4997251.

It is not an unprimeable number, because it can be changed into a prime (4997281) 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 15 ways as a sum of consecutive naturals, for example, 20790 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (374400).

Almost surely, 24997251 is an apocalyptic number.

4997251 is a deficient number, since it is larger than the sum of its proper divisors (993149).

4997251 is a wasteful number, since it uses less digits than its factorization.

4997251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its digits is 22680, while the sum is 37.

The square root of 4997251 is about 2235.4531978997. The cubic root of 4997251 is about 170.9662507635.

It can be divided in two parts, 499 and 7251, that added together give a triangular number (7750 = T124).

The spelling of 4997251 in words is "four million, nine hundred ninety-seven thousand, two hundred fifty-one".

Divisors: 1 7 29 103 203 239 721 1673 2987 6931 20909 24617 48517 172319 713893 4997251