5727121491 has 32 divisors (see below), whose sum is σ = 9484625920. Its totient is φ = 2993169024.

The previous prime is 5727121471. The next prime is 5727121513. The reversal of 5727121491 is 1941217275.

5727121491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5727121491 - 2⁵ = 5727121459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (5727121471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66475 + ... + 125988.

It is an arithmetic number, because the mean of its divisors is an integer number (296394560).

Almost surely, 2^5727121491 is an apocalyptic number.

5727121491 is a deficient number, since it is larger than the sum of its proper divisors (3757504429).

5727121491 is a wasteful number, since it uses less digits than its factorization.

5727121491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192595.

The product of its digits is 35280, while the sum is 39.

The square root of 5727121491 is about 75677.7476607226. The cubic root of 5727121491 is about 1789.1446961946.

The spelling of 5727121491 in words is "five billion, seven hundred twenty-seven million, one hundred twenty-one thousand, four hundred ninety-one".