53173505 has 16 divisors (see below), whose sum is σ = 79553664. Its totient is φ = 33146880.

The previous prime is 53173489. The next prime is 53173511. The reversal of 53173505 is 50537135.

It is not a de Polignac number, because 53173505 - 2⁴ = 53173489 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, 68672 + ... + 69441.

It is an arithmetic number, because the mean of its divisors is an integer number (4972104).

Almost surely, 2^53173505 is an apocalyptic number.

53173505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53173505 is a deficient number, since it is larger than the sum of its proper divisors (26380159).

53173505 is a wasteful number, since it uses less digits than its factorization.

53173505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138136.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 53173505 is about 7292.0165249401. The cubic root of 53173505 is about 376.0380247684.

The spelling of 53173505 in words is "fifty-three million, one hundred seventy-three thousand, five hundred five".