52643487 has 16 divisors (see below), whose sum is σ = 78030848. Its totient is φ = 31350240.

The previous prime is 52643473. The next prime is 52643491. The reversal of 52643487 is 78434625.

It is a happy number.

It is not a de Polignac number, because 52643487 - 2¹⁰ = 52642463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52643587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20563 + ... + 22980.

It is an arithmetic number, because the mean of its divisors is an integer number (4876928).

Almost surely, 2^52643487 is an apocalyptic number.

52643487 is a deficient number, since it is larger than the sum of its proper divisors (25387361).

52643487 is a wasteful number, since it uses less digits than its factorization.

52643487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43590.

The product of its digits is 161280, while the sum is 39.

The square root of 52643487 is about 7255.5831605737. The cubic root of 52643487 is about 374.7844378895.

The spelling of 52643487 in words is "fifty-two million, six hundred forty-three thousand, four hundred eighty-seven".