50691081 has 8 divisors (see below), whose sum is σ = 77243584. Its totient is φ = 28966320.

The previous prime is 50691077. The next prime is 50691083. The reversal of 50691081 is 18019605.

It is a happy number.

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

It is not a de Polignac number, because 50691081 - 2² = 50691077 is a prime.

It is a super-2 number, since 2×50691081² = 5139171385897122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50691083) 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 7 ways as a sum of consecutive naturals, for example, 1206910 + ... + 1206951.

It is an arithmetic number, because the mean of its divisors is an integer number (9655448).

Almost surely, 2^50691081 is an apocalyptic number.

It is an amenable number.

50691081 is a deficient number, since it is larger than the sum of its proper divisors (26552503).

50691081 is a wasteful number, since it uses less digits than its factorization.

50691081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413871.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 50691081 is about 7119.7669203423. The cubic root of 50691081 is about 370.0926989551.

The spelling of 50691081 in words is "fifty million, six hundred ninety-one thousand, eighty-one".