53718505 has 16 divisors (see below), whose sum is σ = 67152384. Its totient is φ = 41207040.

The previous prime is 53718479. The next prime is 53718541. The reversal of 53718505 is 50581735.

It is not a de Polignac number, because 53718505 - 2⁵ = 53718473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15982 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (4197024).

Almost surely, 2^53718505 is an apocalyptic number.

It is an amenable number.

53718505 is a deficient number, since it is larger than the sum of its proper divisors (13433879).

53718505 is a wasteful number, since it uses less digits than its factorization.

53718505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 53718505 is about 7329.2908933948. The cubic root of 53718505 is about 377.3183899036.

The spelling of 53718505 in words is "fifty-three million, seven hundred eighteen thousand, five hundred five".