50507081 has 4 divisors (see below), whose sum is σ = 50592000. Its totient is φ = 50422164.

The previous prime is 50507071. The next prime is 50507087. The reversal of 50507081 is 18070505.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18070505 = 5 ⋅3614101.

It is a cyclic number.

It is not a de Polignac number, because 50507081 - 2¹⁸ = 50244937 is a prime.

It is a super-2 number, since 2×50507081² = 5101930462281122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50507081.

It is not an unprimeable number, because it can be changed into a prime (50507087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41561 + ... + 42758.

It is an arithmetic number, because the mean of its divisors is an integer number (12648000).

Almost surely, 2^50507081 is an apocalyptic number.

It is an amenable number.

50507081 is a deficient number, since it is larger than the sum of its proper divisors (84919).

50507081 is an equidigital number, since it uses as much as digits as its factorization.

50507081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84918.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 50507081 is about 7106.8334017339. The cubic root of 50507081 is about 369.6443648801.

Adding to 50507081 its reverse (18070505), we get a palindrome (68577586).

The spelling of 50507081 in words is "fifty million, five hundred seven thousand, eighty-one".