501105401 has 2 divisors, whose sum is σ = 501105402. Its totient is φ = 501105400.

The previous prime is 501105389. The next prime is 501105419. The reversal of 501105401 is 104501105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460145401 + 40960000 = 21451^2 + 6400^2 .

It is a cyclic number.

It is not a de Polignac number, because 501105401 - 2⁶ = 501105337 is a prime.

It is a super-2 number, since 2×501105401² = 502213245822741602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501105401.

It is not a weakly prime, because it can be changed into another prime (501105431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250552700 + 250552701.

It is an arithmetic number, because the mean of its divisors is an integer number (250552701).

Almost surely, 2^501105401 is an apocalyptic number.

It is an amenable number.

501105401 is a deficient number, since it is larger than the sum of its proper divisors (1).

501105401 is an equidigital number, since it uses as much as digits as its factorization.

501105401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 501105401 is about 22385.3836464779. The cubic root of 501105401 is about 794.2850003798.

Adding to 501105401 its reverse (104501105), we get a palindrome (605606506).

The spelling of 501105401 in words is "five hundred one million, one hundred five thousand, four hundred one".