53506187 has 12 divisors (see below), whose sum is σ = 62373960. Its totient is φ = 45765216.

The previous prime is 53506183. The next prime is 53506207. The reversal of 53506187 is 78160535.

It is not a de Polignac number, because 53506187 - 2² = 53506183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53506183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31463 + ... + 33119.

It is an arithmetic number, because the mean of its divisors is an integer number (5197830).

Almost surely, 2^53506187 is an apocalyptic number.

53506187 is a deficient number, since it is larger than the sum of its proper divisors (8867773).

53506187 is a wasteful number, since it uses less digits than its factorization.

53506187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 53506187 is about 7314.7923415501. The cubic root of 53506187 is about 376.8206268394.

The spelling of 53506187 in words is "fifty-three million, five hundred six thousand, one hundred eighty-seven".