520227481 has 2 divisors, whose sum is σ = 520227482. Its totient is φ = 520227480.

The previous prime is 520227457. The next prime is 520227493. The reversal of 520227481 is 184722025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349690000 + 170537481 = 18700^2 + 13059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520227481 is a prime.

It is a super-2 number, since 2×520227481² = 541273263975210722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520227401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260113740 + 260113741.

It is an arithmetic number, because the mean of its divisors is an integer number (260113741).

Almost surely, 2^520227481 is an apocalyptic number.

It is an amenable number.

520227481 is a deficient number, since it is larger than the sum of its proper divisors (1).

520227481 is an equidigital number, since it uses as much as digits as its factorization.

520227481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 520227481 is about 22808.4958074837. The cubic root of 520227481 is about 804.2623959967.

The spelling of 520227481 in words is "five hundred twenty million, two hundred twenty-seven thousand, four hundred eighty-one".