5721493401 has 20 divisors (see below), whose sum is σ = 9204379492. Its totient is φ = 3520918368.

The previous prime is 5721493391. The next prime is 5721493423. The reversal of 5721493401 is 1043941275.

5721493401 is a `hidden beast` number, since 572 + 1 + 49 + 3 + 40 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2667825801 + 3053667600 = 51651^2 + 55260^2 .

It is not a de Polignac number, because 5721493401 - 2⁵ = 5721493369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5721493451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2715706 + ... + 2717811.

Almost surely, 2^5721493401 is an apocalyptic number.

It is an amenable number.

5721493401 is a deficient number, since it is larger than the sum of its proper divisors (3482886091).

5721493401 is a wasteful number, since it uses less digits than its factorization.

5721493401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433542 (or 5433533 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 5721493401 is about 75640.5539442963. The cubic root of 5721493401 is about 1788.5584349788.

The spelling of 5721493401 in words is "five billion, seven hundred twenty-one million, four hundred ninety-three thousand, four hundred one".