53023645 has 4 divisors (see below), whose sum is σ = 63628380. Its totient is φ = 42418912.

The previous prime is 53023603. The next prime is 53023681. The reversal of 53023645 is 54632035.

53023645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54632035 = 5 ⋅10926407.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 13823524 = 6261^2 + 3718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53023645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302360 + ... + 5302369.

It is an arithmetic number, because the mean of its divisors is an integer number (15907095).

Almost surely, 2^53023645 is an apocalyptic number.

It is an amenable number.

53023645 is a deficient number, since it is larger than the sum of its proper divisors (10604735).

53023645 is a wasteful number, since it uses less digits than its factorization.

53023645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604734.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 53023645 is about 7281.7336534647. The cubic root of 53023645 is about 375.6844271025.

The spelling of 53023645 in words is "fifty-three million, twenty-three thousand, six hundred forty-five".