50997685 has 4 divisors (see below), whose sum is σ = 61197228. Its totient is φ = 40798144.

The previous prime is 50997677. The next prime is 50997707. The reversal of 50997685 is 58679905.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11168964 + 39828721 = 3342^2 + 6311^2 .

It is a cyclic number.

It is not a de Polignac number, because 50997685 - 2³ = 50997677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5099764 + ... + 5099773.

It is an arithmetic number, because the mean of its divisors is an integer number (15299307).

Almost surely, 2^50997685 is an apocalyptic number.

It is an amenable number.

50997685 is a deficient number, since it is larger than the sum of its proper divisors (10199543).

50997685 is a wasteful number, since it uses less digits than its factorization.

50997685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199542.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 50997685 is about 7141.2663442838. The cubic root of 50997685 is about 370.8373657209.

The spelling of 50997685 in words is "fifty million, nine hundred ninety-seven thousand, six hundred eighty-five".