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5144991 = 31990263
BaseRepresentation
bin10011101000000110011111
3100200101121020
4103220012133
52304114431
6302135223
761505655
oct23500637
910611536
105144991
1129a4565
121881513
1310b1a97
1497cdd5
156b9696
hex4e819f

5144991 has 8 divisors (see below), whose sum is σ = 7221120. Its totient is φ = 3249432.

The previous prime is 5144989. The next prime is 5145011. The reversal of 5144991 is 1994415.

5144991 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5144991 - 21 = 5144989 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5144911) 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, 45075 + ... + 45188.

It is an arithmetic number, because the mean of its divisors is an integer number (902640).

Almost surely, 25144991 is an apocalyptic number.

5144991 is a deficient number, since it is larger than the sum of its proper divisors (2076129).

5144991 is a wasteful number, since it uses less digits than its factorization.

5144991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90285.

The product of its digits is 6480, while the sum is 33.

The square root of 5144991 is about 2268.2572605417. The cubic root of 5144991 is about 172.6347445414.

The spelling of 5144991 in words is "five million, one hundred forty-four thousand, nine hundred ninety-one".

Divisors: 1 3 19 57 90263 270789 1714997 5144991