50011111 has 2 divisors, whose sum is σ = 50011112. Its totient is φ = 50011110.

The previous prime is 50011099. The next prime is 50011139. The reversal of 50011111 is 11111005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50011111 - 2⁵ = 50011079 is a prime.

It is a super-2 number, since 2×50011111² = 5002222446908642, which contains 22 as substring.

It is a Chen prime.

50011111 is a modest number, since divided by 11111 gives 500 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50011141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25005555 + 25005556.

It is an arithmetic number, because the mean of its divisors is an integer number (25005556).

Almost surely, 2^50011111 is an apocalyptic number.

50011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

50011111 is an equidigital number, since it uses as much as digits as its factorization.

50011111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5, while the sum is 10.

The square root of 50011111 is about 7071.8534345672. The cubic root of 50011111 is about 368.4304366922.

Adding to 50011111 its reverse (11111005), we get a palindrome (61122116).

It can be divided in two parts, 5001 and 1111, that multiplied together give a triangular number (5556111 = T₃₃₃₃).

The spelling of 50011111 in words is "fifty million, eleven thousand, one hundred eleven".