52191271 has 32 divisors (see below), whose sum is σ = 63360000. Its totient is φ = 42456960.

The previous prime is 52191247. The next prime is 52191281. The reversal of 52191271 is 17219125.

It is a cyclic number.

It is not a de Polignac number, because 52191271 - 2⁵ = 52191239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52191221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478765 + ... + 478873.

It is an arithmetic number, because the mean of its divisors is an integer number (1980000).

Almost surely, 2^52191271 is an apocalyptic number.

52191271 is a deficient number, since it is larger than the sum of its proper divisors (11168729).

52191271 is a wasteful number, since it uses less digits than its factorization.

52191271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 1260, while the sum is 28.

The square root of 52191271 is about 7224.3526353577. The cubic root of 52191271 is about 373.7081974701.

The spelling of 52191271 in words is "fifty-two million, one hundred ninety-one thousand, two hundred seventy-one".