53573537 has 4 divisors (see below), whose sum is σ = 53602116. Its totient is φ = 53544960.

The previous prime is 53573497. The next prime is 53573539. The reversal of 53573537 is 73537535.

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 45711121 + 7862416 = 6761^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 53573537 - 2⁸ = 53573281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53573537.

It is not an unprimeable number, because it can be changed into a prime (53573539) 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, 11264 + ... + 15297.

It is an arithmetic number, because the mean of its divisors is an integer number (13400529).

Almost surely, 2^53573537 is an apocalyptic number.

It is an amenable number.

53573537 is a deficient number, since it is larger than the sum of its proper divisors (28579).

53573537 is a wasteful number, since it uses less digits than its factorization.

53573537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28578.

The product of its digits is 165375, while the sum is 38.

The square root of 53573537 is about 7319.3945787886. The cubic root of 53573537 is about 376.9786660598.

The spelling of 53573537 in words is "fifty-three million, five hundred seventy-three thousand, five hundred thirty-seven".