32551223531 has 2 divisors, whose sum is σ = 32551223532. Its totient is φ = 32551223530.

The previous prime is 32551223513. The next prime is 32551223543. The reversal of 32551223531 is 13532215523.

Together with previous prime (32551223513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13532215523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32551223531 - 2¹⁰ = 32551222507 is a prime.

It is a super-2 number, since 2×32551223531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32551223231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16275611765 + 16275611766.

It is an arithmetic number, because the mean of its divisors is an integer number (16275611766).

Almost surely, 2^32551223531 is an apocalyptic number.

32551223531 is a deficient number, since it is larger than the sum of its proper divisors (1).

32551223531 is an equidigital number, since it uses as much as digits as its factorization.

32551223531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 32.

The spelling of 32551223531 in words is "thirty-two billion, five hundred fifty-one million, two hundred twenty-three thousand, five hundred thirty-one".