531872417 has 2 divisors, whose sum is σ = 531872418. Its totient is φ = 531872416.

The previous prime is 531872347. The next prime is 531872531. The reversal of 531872417 is 714278135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425349376 + 106523041 = 20624^2 + 10321^2 .

It is a cyclic number.

It is not a de Polignac number, because 531872417 - 2¹⁸ = 531610273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531872717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265936208 + 265936209.

It is an arithmetic number, because the mean of its divisors is an integer number (265936209).

Almost surely, 2^531872417 is an apocalyptic number.

It is an amenable number.

531872417 is a deficient number, since it is larger than the sum of its proper divisors (1).

531872417 is an equidigital number, since it uses as much as digits as its factorization.

531872417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 531872417 is about 23062.3593112240. The cubic root of 531872417 is about 810.2191232602.

The spelling of 531872417 in words is "five hundred thirty-one million, eight hundred seventy-two thousand, four hundred seventeen".