5345423621 has 4 divisors (see below), whose sum is σ = 5367604044. Its totient is φ = 5323243200.

The previous prime is 5345423609. The next prime is 5345423623. The reversal of 5345423621 is 1263245435.

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 3722220100 + 1623203521 = 61010^2 + 40289^2 .

It is a cyclic number.

It is not a de Polignac number, because 5345423621 - 2⁶ = 5345423557 is a prime.

It is a super-4 number, since 4×5345423621⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5345423623) 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, 11089850 + ... + 11090331.

It is an arithmetic number, because the mean of its divisors is an integer number (1341901011).

Almost surely, 2^5345423621 is an apocalyptic number.

It is an amenable number.

5345423621 is a deficient number, since it is larger than the sum of its proper divisors (22180423).

5345423621 is a wasteful number, since it uses less digits than its factorization.

5345423621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22180422.

The product of its digits is 86400, while the sum is 35.

The square root of 5345423621 is about 73112.4040160081. The cubic root of 5345423621 is about 1748.4801629945.

The spelling of 5345423621 in words is "five billion, three hundred forty-five million, four hundred twenty-three thousand, six hundred twenty-one".