50945781 has 8 divisors (see below), whose sum is σ = 69763744. Its totient is φ = 33045840.

The previous prime is 50945771. The next prime is 50945831. The reversal of 50945781 is 18754905.

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

It is not a de Polignac number, because 50945781 - 2⁵ = 50945749 is a prime.

It is a super-2 number, since 2×50945781² = 5190945203399922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50945731) 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, 229375 + ... + 229596.

It is an arithmetic number, because the mean of its divisors is an integer number (8720468).

Almost surely, 2^50945781 is an apocalyptic number.

It is an amenable number.

50945781 is a deficient number, since it is larger than the sum of its proper divisors (18817963).

50945781 is a wasteful number, since it uses less digits than its factorization.

50945781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459011.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 50945781 is about 7137.6313297900. The cubic root of 50945781 is about 370.7115137576.

The spelling of 50945781 in words is "fifty million, nine hundred forty-five thousand, seven hundred eighty-one".