53508537 has 12 divisors (see below), whose sum is σ = 81836820. Its totient is φ = 33573888.

The previous prime is 53508479. The next prime is 53508563. The reversal of 53508537 is 73580535.

It can be written as a sum of positive squares in 2 ways, for example, as 32080896 + 21427641 = 5664^2 + 4629^2 .

It is not a de Polignac number, because 53508537 - 2¹² = 53504441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53508577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174712 + ... + 175017.

It is an arithmetic number, because the mean of its divisors is an integer number (6819735).

Almost surely, 2^53508537 is an apocalyptic number.

It is an amenable number.

53508537 is a deficient number, since it is larger than the sum of its proper divisors (28328283).

53508537 is a wasteful number, since it uses less digits than its factorization.

53508537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349752 (or 349749 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 53508537 is about 7314.9529731913. The cubic root of 53508537 is about 376.8261434320.

It can be divided in two parts, 53508 and 537, that added together give a palindrome (54045).

The spelling of 53508537 in words is "fifty-three million, five hundred eight thousand, five hundred thirty-seven".