573217531 has 2 divisors, whose sum is σ = 573217532. Its totient is φ = 573217530.

The previous prime is 573217487. The next prime is 573217571. The reversal of 573217531 is 135712375.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 573217531 - 2¹³ = 573209339 is a prime.

It is a super-2 number, since 2×573217531² = 657156675691471922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (573217571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286608765 + 286608766.

It is an arithmetic number, because the mean of its divisors is an integer number (286608766).

Almost surely, 2^573217531 is an apocalyptic number.

573217531 is a deficient number, since it is larger than the sum of its proper divisors (1).

573217531 is an equidigital number, since it uses as much as digits as its factorization.

573217531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 34.

The square root of 573217531 is about 23941.9617199594. The cubic root of 573217531 is about 830.6916048093.

The spelling of 573217531 in words is "five hundred seventy-three million, two hundred seventeen thousand, five hundred thirty-one".