64552087531 has 4 divisors (see below), whose sum is σ = 65515551592. Its totient is φ = 63588623472.

The previous prime is 64552087517. The next prime is 64552087573. The reversal of 64552087531 is 13578025546.

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 64552087531 - 2⁵ = 64552087499 is a prime.

It is a super-2 number, since 2×64552087531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64552097531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481731930 + ... + 481732063.

It is an arithmetic number, because the mean of its divisors is an integer number (16378887898).

Almost surely, 2^64552087531 is an apocalyptic number.

64552087531 is a deficient number, since it is larger than the sum of its proper divisors (963464061).

64552087531 is an equidigital number, since it uses as much as digits as its factorization.

64552087531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963464060.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 64552087531 in words is "sixty-four billion, five hundred fifty-two million, eighty-seven thousand, five hundred thirty-one".