4253888621 has 4 divisors (see below), whose sum is σ = 4357642044. Its totient is φ = 4150135200.

The previous prime is 4253888599. The next prime is 4253888647. The reversal of 4253888621 is 1268883524.

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 82537225 + 4171351396 = 9085^2 + 64586^2 .

It is a cyclic number.

It is not a de Polignac number, because 4253888621 - 2¹⁴ = 4253872237 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 (4253888671) 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, 51876650 + ... + 51876731.

It is an arithmetic number, because the mean of its divisors is an integer number (1089410511).

Almost surely, 2^4253888621 is an apocalyptic number.

4253888621 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4253888621 is a deficient number, since it is larger than the sum of its proper divisors (103753423).

4253888621 is a wasteful number, since it uses less digits than its factorization.

4253888621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103753422.

The product of its digits is 737280, while the sum is 47.

The square root of 4253888621 is about 65221.8415946683. The cubic root of 4253888621 is about 1620.2997744539.

The spelling of 4253888621 in words is "four billion, two hundred fifty-three million, eight hundred eighty-eight thousand, six hundred twenty-one".