53909507 has 4 divisors (see below), whose sum is σ = 54085416. Its totient is φ = 53733600.

The previous prime is 53909503. The next prime is 53909509. The reversal of 53909507 is 70590935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53909507 - 2² = 53909503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53909503) 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 3 ways as a sum of consecutive naturals, for example, 87494 + ... + 88107.

It is an arithmetic number, because the mean of its divisors is an integer number (13521354).

Almost surely, 2^53909507 is an apocalyptic number.

53909507 is a deficient number, since it is larger than the sum of its proper divisors (175909).

53909507 is a wasteful number, since it uses less digits than its factorization.

53909507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175908.

The product of its (nonzero) digits is 42525, while the sum is 38.

The square root of 53909507 is about 7342.3093778456. The cubic root of 53909507 is about 377.7650598147.

The spelling of 53909507 in words is "fifty-three million, nine hundred nine thousand, five hundred seven".