172540590589 has 4 divisors (see below), whose sum is σ = 172542092800. Its totient is φ = 172539088380.

The previous prime is 172540590533. The next prime is 172540590601. The reversal of 172540590589 is 985095045271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 172540590589 - 2¹¹ = 172540588541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172540500589) 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, 563139 + ... + 813760.

It is an arithmetic number, because the mean of its divisors is an integer number (43135523200).

Almost surely, 2^172540590589 is an apocalyptic number.

It is an amenable number.

172540590589 is a deficient number, since it is larger than the sum of its proper divisors (1502211).

172540590589 is a wasteful number, since it uses less digits than its factorization.

172540590589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502210.

The product of its (nonzero) digits is 4536000, while the sum is 55.

The spelling of 172540590589 in words is "one hundred seventy-two billion, five hundred forty million, five hundred ninety thousand, five hundred eighty-nine".