64552571 has 4 divisors (see below), whose sum is σ = 66634944. Its totient is φ = 62470200.

The previous prime is 64552567. The next prime is 64552577. The reversal of 64552571 is 17525546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17525546 = 2 ⋅8762773.

It is a cyclic number.

It is not a de Polignac number, because 64552571 - 2² = 64552567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64552577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041140 + ... + 1041201.

It is an arithmetic number, because the mean of its divisors is an integer number (16658736).

Almost surely, 2^64552571 is an apocalyptic number.

64552571 is a deficient number, since it is larger than the sum of its proper divisors (2082373).

64552571 is a wasteful number, since it uses less digits than its factorization.

64552571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082372.

The product of its digits is 42000, while the sum is 35.

The square root of 64552571 is about 8034.4614629731. The cubic root of 64552571 is about 401.1478922905.

The spelling of 64552571 in words is "sixty-four million, five hundred fifty-two thousand, five hundred seventy-one".