524263981 has 2 divisors, whose sum is σ = 524263982. Its totient is φ = 524263980.

The previous prime is 524263973. The next prime is 524264057. The reversal of 524263981 is 189362425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310957956 + 213306025 = 17634^2 + 14605^2 .

It is a cyclic number.

It is not a de Polignac number, because 524263981 - 2³ = 524263973 is a prime.

It is a super-2 number, since 2×524263981² = 549705443547936722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524263781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262131990 + 262131991.

It is an arithmetic number, because the mean of its divisors is an integer number (262131991).

Almost surely, 2^524263981 is an apocalyptic number.

It is an amenable number.

524263981 is a deficient number, since it is larger than the sum of its proper divisors (1).

524263981 is an equidigital number, since it uses as much as digits as its factorization.

524263981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 524263981 is about 22896.8115902630. The cubic root of 524263981 is about 806.3371580876.

The spelling of 524263981 in words is "five hundred twenty-four million, two hundred sixty-three thousand, nine hundred eighty-one".