52445537 has 4 divisors (see below), whose sum is σ = 52711956. Its totient is φ = 52179120.

The previous prime is 52445531. The next prime is 52445551. The reversal of 52445537 is 73554425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51136801 + 1308736 = 7151^2 + 1144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52445537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52445497 and 52445506.

It is not an unprimeable number, because it can be changed into a prime (52445531) 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, 132914 + ... + 133307.

It is an arithmetic number, because the mean of its divisors is an integer number (13177989).

Almost surely, 2^52445537 is an apocalyptic number.

It is an amenable number.

52445537 is a deficient number, since it is larger than the sum of its proper divisors (266419).

52445537 is a wasteful number, since it uses less digits than its factorization.

52445537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266418.

The product of its digits is 84000, while the sum is 35.

The square root of 52445537 is about 7241.9290938258. The cubic root of 52445537 is about 374.3140931460.

The spelling of 52445537 in words is "fifty-two million, four hundred forty-five thousand, five hundred thirty-seven".