52281637 has 4 divisors (see below), whose sum is σ = 52327456. Its totient is φ = 52235820.

The previous prime is 52281589. The next prime is 52281643. The reversal of 52281637 is 73618225.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52281637 - 2¹¹ = 52279589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52251637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21153 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (13081864).

Almost surely, 2^52281637 is an apocalyptic number.

It is an amenable number.

52281637 is a deficient number, since it is larger than the sum of its proper divisors (45819).

52281637 is a wasteful number, since it uses less digits than its factorization.

52281637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45818.

The product of its digits is 20160, while the sum is 34.

The square root of 52281637 is about 7230.6041932884. The cubic root of 52281637 is about 373.9237574193.

The spelling of 52281637 in words is "fifty-two million, two hundred eighty-one thousand, six hundred thirty-seven".