50251643 has 12 divisors (see below), whose sum is σ = 57618648. Its totient is φ = 43655040.

The previous prime is 50251639. The next prime is 50251681. The reversal of 50251643 is 34615205.

It is not a de Polignac number, because 50251643 - 2² = 50251639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50251613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5873 + ... + 11618.

It is an arithmetic number, because the mean of its divisors is an integer number (4801554).

Almost surely, 2^50251643 is an apocalyptic number.

50251643 is a deficient number, since it is larger than the sum of its proper divisors (7367005).

50251643 is a wasteful number, since it uses less digits than its factorization.

50251643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534 (or 17521 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 50251643 is about 7088.8393267163. The cubic root of 50251643 is about 369.0201564086.

Adding to 50251643 its reverse (34615205), we get a palindrome (84866848).

The spelling of 50251643 in words is "fifty million, two hundred fifty-one thousand, six hundred forty-three".