5257721327 has 4 divisors (see below), whose sum is σ = 5379993960. Its totient is φ = 5135448696.

The previous prime is 5257721321. The next prime is 5257721353. The reversal of 5257721327 is 7231277525.

It is a happy number.

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 5257721327 - 2⁶ = 5257721263 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 (5257721321) 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, 61136252 + ... + 61136337.

It is an arithmetic number, because the mean of its divisors is an integer number (1344998490).

Almost surely, 2^5257721327 is an apocalyptic number.

5257721327 is a deficient number, since it is larger than the sum of its proper divisors (122272633).

5257721327 is a wasteful number, since it uses less digits than its factorization.

5257721327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122272632.

The product of its digits is 205800, while the sum is 41.

The square root of 5257721327 is about 72510.1463727663. The cubic root of 5257721327 is about 1738.8649539109.

The spelling of 5257721327 in words is "five billion, two hundred fifty-seven million, seven hundred twenty-one thousand, three hundred twenty-seven".