53390573 has 4 divisors (see below), whose sum is σ = 53549340. Its totient is φ = 53231808.

The previous prime is 53390549. The next prime is 53390621. The reversal of 53390573 is 37509335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37509335 = 5 ⋅7501867.

It can be written as a sum of positive squares in 2 ways, for example, as 39980329 + 13410244 = 6323^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 53390573 - 2¹⁰ = 53389549 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 (53390503) 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, 78878 + ... + 79551.

It is an arithmetic number, because the mean of its divisors is an integer number (13387335).

Almost surely, 2^53390573 is an apocalyptic number.

It is an amenable number.

53390573 is a deficient number, since it is larger than the sum of its proper divisors (158767).

53390573 is a wasteful number, since it uses less digits than its factorization.

53390573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158766.

The product of its (nonzero) digits is 42525, while the sum is 35.

The square root of 53390573 is about 7306.8853145509. The cubic root of 53390573 is about 376.5490248778.

The spelling of 53390573 in words is "fifty-three million, three hundred ninety thousand, five hundred seventy-three".