20022524531 has 4 divisors (see below), whose sum is σ = 20036306112. Its totient is φ = 20008742952.

The previous prime is 20022524519. The next prime is 20022524603. The reversal of 20022524531 is 13542522002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022524531 is a prime.

It is a super-2 number, since 2×20022524531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20022524531.

It is not an unprimeable number, because it can be changed into a prime (20022514531) 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, 6888611 + ... + 6891516.

It is an arithmetic number, because the mean of its divisors is an integer number (5009076528).

Almost surely, 2^20022524531 is an apocalyptic number.

20022524531 is a deficient number, since it is larger than the sum of its proper divisors (13781581).

20022524531 is a wasteful number, since it uses less digits than its factorization.

20022524531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13781580.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20022524531 in words is "twenty billion, twenty-two million, five hundred twenty-four thousand, five hundred thirty-one".