50781011 has 2 divisors, whose sum is σ = 50781012. Its totient is φ = 50781010.

The previous prime is 50780999. The next prime is 50781037. The reversal of 50781011 is 11018705.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50781011 - 2¹⁰ = 50779987 is a prime.

It is a super-2 number, since 2×50781011² = 5157422156364242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (50781061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25390505 + 25390506.

It is an arithmetic number, because the mean of its divisors is an integer number (25390506).

Almost surely, 2^50781011 is an apocalyptic number.

50781011 is a deficient number, since it is larger than the sum of its proper divisors (1).

50781011 is an equidigital number, since it uses as much as digits as its factorization.

50781011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 50781011 is about 7126.0796375006. The cubic root of 50781011 is about 370.3114275969.

Adding to 50781011 its reverse (11018705), we get a palindrome (61799716).

It can be divided in two parts, 507 and 81011, that added together give a palindrome (81518).

The spelling of 50781011 in words is "fifty million, seven hundred eighty-one thousand, eleven".