50021723 has 4 divisors (see below), whose sum is σ = 51746640. Its totient is φ = 48296808.

The previous prime is 50021707. The next prime is 50021747. The reversal of 50021723 is 32712005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32712005 = 5 ⋅6542401.

It is a cyclic number.

It is not a de Polignac number, because 50021723 - 2⁴ = 50021707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50021695 and 50021704.

It is not an unprimeable number, because it can be changed into a prime (50021753) 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, 862415 + ... + 862472.

It is an arithmetic number, because the mean of its divisors is an integer number (12936660).

Almost surely, 2^50021723 is an apocalyptic number.

50021723 is a deficient number, since it is larger than the sum of its proper divisors (1724917).

50021723 is a wasteful number, since it uses less digits than its factorization.

50021723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724916.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 50021723 is about 7072.6036931246. The cubic root of 50021723 is about 368.4564942836.

Adding to 50021723 its reverse (32712005), we get a palindrome (82733728).

The spelling of 50021723 in words is "fifty million, twenty-one thousand, seven hundred twenty-three".