5445581231 has 4 divisors (see below), whose sum is σ = 5446165200. Its totient is φ = 5444997264.

The previous prime is 5445581213. The next prime is 5445581237. The reversal of 5445581231 is 1321855445.

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 5445581231 - 2²² = 5441386927 is a prime.

It is a super-2 number, since 2×5445581231² = 59308709886838950722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5445581237) 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, 277766 + ... + 296723.

It is an arithmetic number, because the mean of its divisors is an integer number (1361541300).

Almost surely, 2^5445581231 is an apocalyptic number.

5445581231 is a deficient number, since it is larger than the sum of its proper divisors (583969).

5445581231 is an equidigital number, since it uses as much as digits as its factorization.

5445581231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583968.

The product of its digits is 96000, while the sum is 38.

The square root of 5445581231 is about 73794.1815524774. The cubic root of 5445581231 is about 1759.3331270637. Note that the first 3 decimals are identical.

The spelling of 5445581231 in words is "five billion, four hundred forty-five million, five hundred eighty-one thousand, two hundred thirty-one".