53865633 has 8 divisors (see below), whose sum is σ = 71988448. Its totient is φ = 35826624.

The previous prime is 53865613. The next prime is 53865661. The reversal of 53865633 is 33656835.

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

It is not a de Polignac number, because 53865633 - 2¹² = 53861537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53865591 and 53865600.

It is not an unprimeable number, because it can be changed into a prime (53865613) 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, 19435 + ... + 22032.

It is an arithmetic number, because the mean of its divisors is an integer number (8998556).

Almost surely, 2^53865633 is an apocalyptic number.

It is an amenable number.

53865633 is a deficient number, since it is larger than the sum of its proper divisors (18122815).

53865633 is a wasteful number, since it uses less digits than its factorization.

53865633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903.

The product of its digits is 194400, while the sum is 39.

The square root of 53865633 is about 7339.3210176419. The cubic root of 53865633 is about 377.6625512256.

The spelling of 53865633 in words is "fifty-three million, eight hundred sixty-five thousand, six hundred thirty-three".