52871491 has 4 divisors (see below), whose sum is σ = 53595832. Its totient is φ = 52147152.

The previous prime is 52871473. The next prime is 52871501. The reversal of 52871491 is 19417825.

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 52871491 - 2⁷ = 52871363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52871491.

It is not an unprimeable number, because it can be changed into a prime (52871191) 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 3 ways as a sum of consecutive naturals, for example, 362061 + ... + 362206.

It is an arithmetic number, because the mean of its divisors is an integer number (13398958).

Almost surely, 2^52871491 is an apocalyptic number.

52871491 is a deficient number, since it is larger than the sum of its proper divisors (724341).

52871491 is an equidigital number, since it uses as much as digits as its factorization.

52871491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724340.

The product of its digits is 20160, while the sum is 37.

The square root of 52871491 is about 7271.2784983110. The cubic root of 52871491 is about 375.3247344160.

The spelling of 52871491 in words is "fifty-two million, eight hundred seventy-one thousand, four hundred ninety-one".