531244081 has 4 divisors (see below), whose sum is σ = 538726464. Its totient is φ = 523761700.

The previous prime is 531244079. The next prime is 531244097. The reversal of 531244081 is 180442135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180442135 = 5 ⋅36088427.

It is a cyclic number.

It is not a de Polignac number, because 531244081 - 2¹ = 531244079 is a prime.

It is a super-2 number, since 2×531244081² = 564440547195069122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531244001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3741085 + ... + 3741226.

It is an arithmetic number, because the mean of its divisors is an integer number (134681616).

Almost surely, 2^531244081 is an apocalyptic number.

It is an amenable number.

531244081 is a deficient number, since it is larger than the sum of its proper divisors (7482383).

531244081 is an equidigital number, since it uses as much as digits as its factorization.

531244081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482382.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 531244081 is about 23048.7327417366. The cubic root of 531244081 is about 809.8999424239.

The spelling of 531244081 in words is "five hundred thirty-one million, two hundred forty-four thousand, eighty-one".