501314881 has 2 divisors, whose sum is σ = 501314882. Its totient is φ = 501314880.

The previous prime is 501314873. The next prime is 501314903. The reversal of 501314881 is 188413105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474368400 + 26946481 = 21780^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 501314881 - 2³ = 501314873 is a prime.

It is a super-2 number, since 2×501314881² = 502633219824088322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (501324881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250657440 + 250657441.

It is an arithmetic number, because the mean of its divisors is an integer number (250657441).

Almost surely, 2^501314881 is an apocalyptic number.

It is an amenable number.

501314881 is a deficient number, since it is larger than the sum of its proper divisors (1).

501314881 is an equidigital number, since it uses as much as digits as its factorization.

501314881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 501314881 is about 22390.0621035316. The cubic root of 501314881 is about 794.3956648174.

Adding to 501314881 its reverse (188413105), we get a palindrome (689727986).

The spelling of 501314881 in words is "five hundred one million, three hundred fourteen thousand, eight hundred eighty-one".