5221313645 has 16 divisors (see below), whose sum is σ = 6437428608. Its totient is φ = 4062571200.

The previous prime is 5221313641. The next prime is 5221313681. The reversal of 5221313645 is 5463131225.

It is a happy number.

It is not a de Polignac number, because 5221313645 - 2² = 5221313641 is a prime.

It is a super-3 number, since 3×5221313645³ (a number of 30 digits) contains 333 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 (5221313641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745952 + ... + 752918.

It is an arithmetic number, because the mean of its divisors is an integer number (402339288).

Almost surely, 2^5221313645 is an apocalyptic number.

It is an amenable number.

5221313645 is a deficient number, since it is larger than the sum of its proper divisors (1216114963).

5221313645 is a wasteful number, since it uses less digits than its factorization.

5221313645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060.

The product of its digits is 21600, while the sum is 32.

The square root of 5221313645 is about 72258.6579241547. The cubic root of 5221313645 is about 1734.8419985288.

The spelling of 5221313645 in words is "five billion, two hundred twenty-one million, three hundred thirteen thousand, six hundred forty-five".