50120001 has 18 divisors (see below), whose sum is σ = 73998002. Its totient is φ = 32689440.

The previous prime is 50119991. The next prime is 50120009. The reversal of 50120001 is 10002105.

It is a happy number.

50120001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 25765776 + 24354225 = 5076^2 + 4935^2 .

It is not a de Polignac number, because 50120001 - 2²⁵ = 16565569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18621 + ... + 21141.

Almost surely, 2^50120001 is an apocalyptic number.

It is an amenable number.

50120001 is a deficient number, since it is larger than the sum of its proper divisors (23878001).

50120001 is a wasteful number, since it uses less digits than its factorization.

50120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 50120001 is about 7079.5480787971. The cubic root of 50120001 is about 368.6976393719.

Adding to 50120001 its reverse (10002105), we get a palindrome (60122106).

It can be divided in two parts, 501 and 20001, that added together give a palindrome (20502).

The spelling of 50120001 in words is "fifty million, one hundred twenty thousand, one".