5364215621 has 4 divisors (see below), whose sum is σ = 5452153644. Its totient is φ = 5276277600.

The previous prime is 5364215617. The next prime is 5364215651. The reversal of 5364215621 is 1265124635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2804867521 + 2559348100 = 52961^2 + 50590^2 .

It is a cyclic number.

It is not a de Polignac number, because 5364215621 - 2² = 5364215617 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 (5364215611) 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, 43968920 + ... + 43969041.

It is an arithmetic number, because the mean of its divisors is an integer number (1363038411).

Almost surely, 2^5364215621 is an apocalyptic number.

It is an amenable number.

5364215621 is a deficient number, since it is larger than the sum of its proper divisors (87938023).

5364215621 is an equidigital number, since it uses as much as digits as its factorization.

5364215621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87938022.

The product of its digits is 43200, while the sum is 35.

The square root of 5364215621 is about 73240.8057096589. The cubic root of 5364215621 is about 1750.5267117683.

The spelling of 5364215621 in words is "five billion, three hundred sixty-four million, two hundred fifteen thousand, six hundred twenty-one".