5721091 has 4 divisors (see below), whose sum is σ = 5918400. Its totient is φ = 5523784.

The previous prime is 5721059. The next prime is 5721113. The reversal of 5721091 is 1901275.

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

It is a cyclic number.

It is not a de Polignac number, because 5721091 - 2⁵ = 5721059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5721011) 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, 98611 + ... + 98668.

It is an arithmetic number, because the mean of its divisors is an integer number (1479600).

Almost surely, 2^5721091 is an apocalyptic number.

5721091 is a deficient number, since it is larger than the sum of its proper divisors (197309).

5721091 is a wasteful number, since it uses less digits than its factorization.

5721091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197308.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 5721091 is about 2391.8802227536. The cubic root of 5721091 is about 178.8516503352.

The spelling of 5721091 in words is "five million, seven hundred twenty-one thousand, ninety-one".