Search a number
-
+
50291413 = 281178973
BaseRepresentation
bin1011111111011…
…0001011010101
310111122001211221
42333312023111
5100333311123
64553530341
71150320124
oct277661325
9114561757
1050291413
112642a757
1214a139b1
13a55ac43
146971abb
15463625d
hex2ff62d5

50291413 has 4 divisors (see below), whose sum is σ = 50470668. Its totient is φ = 50112160.

The previous prime is 50291411. The next prime is 50291447. The reversal of 50291413 is 31419205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31419205 = 56283841.

It can be written as a sum of positive squares in 2 ways, for example, as 18852964 + 31438449 = 4342^2 + 5607^2 .

It is a cyclic number.

It is not a de Polignac number, because 50291413 - 21 = 50291411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50291411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89206 + ... + 89767.

It is an arithmetic number, because the mean of its divisors is an integer number (12617667).

Almost surely, 250291413 is an apocalyptic number.

It is an amenable number.

50291413 is a deficient number, since it is larger than the sum of its proper divisors (179255).

50291413 is a wasteful number, since it uses less digits than its factorization.

50291413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179254.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 50291413 is about 7091.6438855882. The cubic root of 50291413 is about 369.1174803357.

The spelling of 50291413 in words is "fifty million, two hundred ninety-one thousand, four hundred thirteen".

Divisors: 1 281 178973 50291413