53049187 has 4 divisors (see below), whose sum is σ = 53139240. Its totient is φ = 52959136.

The previous prime is 53049167. The next prime is 53049253. The reversal of 53049187 is 78194035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78194035 = 5 ⋅15638807.

It is a cyclic number.

It is not a de Polignac number, because 53049187 - 2¹⁵ = 53016419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53049107) 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, 44137 + ... + 45322.

It is an arithmetic number, because the mean of its divisors is an integer number (13284810).

Almost surely, 2^53049187 is an apocalyptic number.

53049187 is a deficient number, since it is larger than the sum of its proper divisors (90053).

53049187 is an equidigital number, since it uses as much as digits as its factorization.

53049187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90052.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 53049187 is about 7283.4872828886. The cubic root of 53049187 is about 375.7447410201.

The spelling of 53049187 in words is "fifty-three million, forty-nine thousand, one hundred eighty-seven".