53659873 has 4 divisors (see below), whose sum is σ = 53747460. Its totient is φ = 53572288.

The previous prime is 53659867. The next prime is 53659877. The reversal of 53659873 is 37895635.

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

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 53100369 = 748^2 + 7287^2 .

It is a cyclic number.

It is not a de Polignac number, because 53659873 - 2⁵ = 53659841 is a prime.

It is a super-2 number, since 2×53659873² = 5758763940752258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53659877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42868 + ... + 44101.

It is an arithmetic number, because the mean of its divisors is an integer number (13436865).

Almost surely, 2^53659873 is an apocalyptic number.

It is an amenable number.

53659873 is a deficient number, since it is larger than the sum of its proper divisors (87587).

53659873 is an equidigital number, since it uses as much as digits as its factorization.

53659873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87586.

The product of its digits is 680400, while the sum is 46.

The square root of 53659873 is about 7325.2899601313. The cubic root of 53659873 is about 377.1810630145.

The spelling of 53659873 in words is "fifty-three million, six hundred fifty-nine thousand, eight hundred seventy-three".