501128141 has 2 divisors, whose sum is σ = 501128142. Its totient is φ = 501128140.

The previous prime is 501128119. The next prime is 501128161. The reversal of 501128141 is 141821105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391842025 + 109286116 = 19795^2 + 10454^2 .

It is a cyclic number.

It is not a de Polignac number, because 501128141 - 2¹⁸ = 500865997 is a prime.

It is a super-2 number, since 2×501128141² = 502258827404231762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501128161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250564070 + 250564071.

It is an arithmetic number, because the mean of its divisors is an integer number (250564071).

Almost surely, 2^501128141 is an apocalyptic number.

It is an amenable number.

501128141 is a deficient number, since it is larger than the sum of its proper divisors (1).

501128141 is an equidigital number, since it uses as much as digits as its factorization.

501128141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 501128141 is about 22385.8915614277. The cubic root of 501128141 is about 794.2970149964.

Adding to 501128141 its reverse (141821105), we get a palindrome (642949246).

The spelling of 501128141 in words is "five hundred one million, one hundred twenty-eight thousand, one hundred forty-one".