50027781 has 4 divisors (see below), whose sum is σ = 66703712. Its totient is φ = 33351852.

The previous prime is 50027767. The next prime is 50027801. The reversal of 50027781 is 18772005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50027781 - 2⁶ = 50027717 is a prime.

It is a super-2 number, since 2×50027781² = 5005557743567922, 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 (50027281) 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, 8337961 + ... + 8337966.

It is an arithmetic number, because the mean of its divisors is an integer number (16675928).

Almost surely, 2^50027781 is an apocalyptic number.

It is an amenable number.

50027781 is a deficient number, since it is larger than the sum of its proper divisors (16675931).

50027781 is a wasteful number, since it uses less digits than its factorization.

50027781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16675930.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 50027781 is about 7073.0319524232. The cubic root of 50027781 is about 368.4713679505.

Adding to 50027781 its reverse (18772005), we get a palindrome (68799786).

The spelling of 50027781 in words is "fifty million, twenty-seven thousand, seven hundred eighty-one".