5445013021 has 4 divisors (see below), whose sum is σ = 6222872032. Its totient is φ = 4667154012.

The previous prime is 5445013003. The next prime is 5445013037. The reversal of 5445013021 is 1203105445.

It is a happy number.

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 5445013021 - 2¹⁵ = 5444980253 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 (5445013051) 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, 388929495 + ... + 388929508.

It is an arithmetic number, because the mean of its divisors is an integer number (1555718008).

Almost surely, 2^5445013021 is an apocalyptic number.

It is an amenable number.

5445013021 is a deficient number, since it is larger than the sum of its proper divisors (777859011).

5445013021 is an equidigital number, since it uses as much as digits as its factorization.

5445013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777859010.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5445013021 is about 73790.3314872619. The cubic root of 5445013021 is about 1759.2719333848.

Adding to 5445013021 its reverse (1203105445), we get a palindrome (6648118466).

The spelling of 5445013021 in words is "five billion, four hundred forty-five million, thirteen thousand, twenty-one".