50721706 has 8 divisors (see below), whose sum is σ = 86951520. Its totient is φ = 21737868.

The previous prime is 50721701. The next prime is 50721707. The reversal of 50721706 is 60712705.

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

It is not an unprimeable number, because it can be changed into a prime (50721701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811476 + ... + 1811503.

It is an arithmetic number, because the mean of its divisors is an integer number (10868940).

Almost surely, 2^50721706 is an apocalyptic number.

50721706 is a deficient number, since it is larger than the sum of its proper divisors (36229814).

50721706 is a wasteful number, since it uses less digits than its factorization.

50721706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622988.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 50721706 is about 7121.9172980315. The cubic root of 50721706 is about 370.1672144120.

Subtracting 50721706 from its reverse (60712705), we obtain a palindrome (9990999).

The spelling of 50721706 in words is "fifty million, seven hundred twenty-one thousand, seven hundred six".