53188505 has 16 divisors (see below), whose sum is σ = 67366080. Its totient is φ = 40203072.

The previous prime is 53188501. The next prime is 53188511. The reversal of 53188505 is 50588135.

It is a cyclic number.

It is not a de Polignac number, because 53188505 - 2² = 53188501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53188501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63902 + ... + 64728.

It is an arithmetic number, because the mean of its divisors is an integer number (4210380).

Almost surely, 2^53188505 is an apocalyptic number.

It is an amenable number.

53188505 is a deficient number, since it is larger than the sum of its proper divisors (14177575).

53188505 is a wasteful number, since it uses less digits than its factorization.

53188505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 53188505 is about 7293.0449744945. The cubic root of 53188505 is about 376.0733809736.

The spelling of 53188505 in words is "fifty-three million, one hundred eighty-eight thousand, five hundred five".