572435785531 has 4 divisors (see below), whose sum is σ = 590901456064. Its totient is φ = 553970115000.

The previous prime is 572435785511. The next prime is 572435785543. The reversal of 572435785531 is 135587534275.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 572435785531 - 2¹⁹ = 572435261243 is a prime.

It is a super-2 number, since 2×572435785531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572435785501) 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, 9232835220 + ... + 9232835281.

It is an arithmetic number, because the mean of its divisors is an integer number (147725364016).

Almost surely, 2^572435785531 is an apocalyptic number.

572435785531 is a deficient number, since it is larger than the sum of its proper divisors (18465670533).

572435785531 is a wasteful number, since it uses less digits than its factorization.

572435785531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18465670532.

The product of its digits is 17640000, while the sum is 55.

The spelling of 572435785531 in words is "five hundred seventy-two billion, four hundred thirty-five million, seven hundred eighty-five thousand, five hundred thirty-one".