52387531 has 4 divisors (see below), whose sum is σ = 59871472. Its totient is φ = 44903592.

The previous prime is 52387529. The next prime is 52387547. The reversal of 52387531 is 13578325.

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 52387531 - 2¹ = 52387529 is a prime.

It is a super-2 number, since 2×52387531² = 5488906808551922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52387331) 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 3 ways as a sum of consecutive naturals, for example, 3741960 + ... + 3741973.

It is an arithmetic number, because the mean of its divisors is an integer number (14967868).

Almost surely, 2^52387531 is an apocalyptic number.

52387531 is a deficient number, since it is larger than the sum of its proper divisors (7483941).

52387531 is an equidigital number, since it uses as much as digits as its factorization.

52387531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483940.

The product of its digits is 25200, while the sum is 34.

The square root of 52387531 is about 7237.9231137116. The cubic root of 52387531 is about 374.1760421679.

It can be divided in two parts, 5238 and 7531, that added together give a square (12769 = 113²).

The spelling of 52387531 in words is "fifty-two million, three hundred eighty-seven thousand, five hundred thirty-one".