50011997 has 12 divisors (see below), whose sum is σ = 58444380. Its totient is φ = 42670656.

The previous prime is 50011993. The next prime is 50012003. The reversal of 50011997 is 79911005.

It can be written as a sum of positive squares in 2 ways, for example, as 41654116 + 8357881 = 6454^2 + 2891^2 .

It is not a de Polignac number, because 50011997 - 2² = 50011993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50011993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8993 + ... + 13449.

It is an arithmetic number, because the mean of its divisors is an integer number (4870365).

Almost surely, 2^50011997 is an apocalyptic number.

It is an amenable number.

50011997 is a deficient number, since it is larger than the sum of its proper divisors (8432383).

50011997 is a wasteful number, since it uses less digits than its factorization.

50011997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4693 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 50011997 is about 7071.9160769907. The cubic root of 50011997 is about 368.4326123917.

The spelling of 50011997 in words is "fifty million, eleven thousand, nine hundred ninety-seven".