50999645 has 8 divisors (see below), whose sum is σ = 61433856. Its totient is φ = 40643536.

The previous prime is 50999623. The next prime is 50999651. The reversal of 50999645 is 54699905.

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

It is a cyclic number.

It is not a de Polignac number, because 50999645 - 2¹⁰ = 50998621 is a prime.

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 50999645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18077 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (7679232).

Almost surely, 2^50999645 is an apocalyptic number.

It is an amenable number.

50999645 is a deficient number, since it is larger than the sum of its proper divisors (10434211).

50999645 is a wasteful number, since it uses less digits than its factorization.

50999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39051.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 50999645 is about 7141.4035735281. The cubic root of 50999645 is about 370.8421164720.

The spelling of 50999645 in words is "fifty million, nine hundred ninety-nine thousand, six hundred forty-five".