50145643 has 4 divisors (see below), whose sum is σ = 50465200. Its totient is φ = 49826088.

The previous prime is 50145629. The next prime is 50145647. The reversal of 50145643 is 34654105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50145643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50145647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159543 + ... + 159856.

It is an arithmetic number, because the mean of its divisors is an integer number (12616300).

Almost surely, 2^50145643 is an apocalyptic number.

50145643 is a deficient number, since it is larger than the sum of its proper divisors (319557).

50145643 is a wasteful number, since it uses less digits than its factorization.

50145643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319556.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 50145643 is about 7081.3588385281. The cubic root of 50145643 is about 368.7605053792.

Adding to 50145643 its reverse (34654105), we get a palindrome (84799748).

The spelling of 50145643 in words is "fifty million, one hundred forty-five thousand, six hundred forty-three".