53505573 has 8 divisors (see below), whose sum is σ = 77826336. Its totient is φ = 32427600.

The previous prime is 53505563. The next prime is 53505581. The reversal of 53505573 is 37550535.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53505573 - 2⁵ = 53505541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1621381 = 53505573 / (5 + 3 + 5 + 0 + 5 + 5 + 7 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810658 + ... + 810723.

It is an arithmetic number, because the mean of its divisors is an integer number (9728292).

Almost surely, 2^53505573 is an apocalyptic number.

It is an amenable number.

53505573 is a deficient number, since it is larger than the sum of its proper divisors (24320763).

53505573 is a wasteful number, since it uses less digits than its factorization.

53505573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621395.

The product of its (nonzero) digits is 39375, while the sum is 33.

The square root of 53505573 is about 7314.7503716805. The cubic root of 53505573 is about 376.8191854562.

It can be divided in two parts, 53505 and 573, that multiplied together give a triangular number (30658365 = T₇₈₃₀).

The spelling of 53505573 in words is "fifty-three million, five hundred five thousand, five hundred seventy-three".