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50311413 = 3239714081
BaseRepresentation
bin1011111111101…
…1000011110101
310111200002021200
42333323003311
5100334431123
64554203113
71150432335
oct277730365
9114602250
1050311413
1126443789
1214a23499
13a567089
1469790c5
15463c143
hex2ffb0f5

50311413 has 12 divisors (see below), whose sum is σ = 72860268. Its totient is φ = 33454080.

The previous prime is 50311409. The next prime is 50311427. The reversal of 50311413 is 31411305.

It can be written as a sum of positive squares in 2 ways, for example, as 37970244 + 12341169 = 6162^2 + 3513^2 .

It is not a de Polignac number, because 50311413 - 22 = 50311409 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50311493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3468 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (6071689).

Almost surely, 250311413 is an apocalyptic number.

It is an amenable number.

50311413 is a deficient number, since it is larger than the sum of its proper divisors (22548855).

50311413 is a wasteful number, since it uses less digits than its factorization.

50311413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14484 (or 14481 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 50311413 is about 7093.0538557098. The cubic root of 50311413 is about 369.1664043353.

Adding to 50311413 its reverse (31411305), we get a palindrome (81722718).

The spelling of 50311413 in words is "fifty million, three hundred eleven thousand, four hundred thirteen".

Divisors: 1 3 9 397 1191 3573 14081 42243 126729 5590157 16770471 50311413