53523973 has 4 divisors (see below), whose sum is σ = 56672460. Its totient is φ = 50375488.

The previous prime is 53523971. The next prime is 53523991. The reversal of 53523973 is 37932535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37932535 = 5 ⋅7586507.

It can be written as a sum of positive squares in 2 ways, for example, as 38415204 + 15108769 = 6198^2 + 3887^2 .

It is not a de Polignac number, because 53523973 - 2¹ = 53523971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53523971) 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, 1574218 + ... + 1574251.

It is an arithmetic number, because the mean of its divisors is an integer number (14168115).

Almost surely, 2^53523973 is an apocalyptic number.

It is an amenable number.

53523973 is a deficient number, since it is larger than the sum of its proper divisors (3148487).

53523973 is a wasteful number, since it uses less digits than its factorization.

53523973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148486.

The product of its digits is 85050, while the sum is 37.

The square root of 53523973 is about 7316.0079961684. The cubic root of 53523973 is about 376.8623752150.

The spelling of 53523973 in words is "fifty-three million, five hundred twenty-three thousand, nine hundred seventy-three".