50750021 has 16 divisors (see below), whose sum is σ = 59241600. Its totient is φ = 42577920.

The previous prime is 50750009. The next prime is 50750023. The reversal of 50750021 is 12005705.

It is a de Polignac number, because none of the positive numbers 2^k-50750021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50749975 and 50750002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50750023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112805 + ... + 113253.

It is an arithmetic number, because the mean of its divisors is an integer number (3702600).

Almost surely, 2^50750021 is an apocalyptic number.

It is an amenable number.

50750021 is a deficient number, since it is larger than the sum of its proper divisors (8491579).

50750021 is a wasteful number, since it uses less digits than its factorization.

50750021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 50750021 is about 7123.9048982984. The cubic root of 50750021 is about 370.2360825931.

Adding to 50750021 its reverse (12005705), we get a palindrome (62755726).

The spelling of 50750021 in words is "fifty million, seven hundred fifty thousand, twenty-one".