53163644 has 6 divisors (see below), whose sum is σ = 93036384. Its totient is φ = 26581820.

The previous prime is 53163631. The next prime is 53163679. The reversal of 53163644 is 44636135.

It is a self number, because there is not a number n which added to its sum of digits gives 53163644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6645452 + ... + 6645459.

It is an arithmetic number, because the mean of its divisors is an integer number (15506064).

Almost surely, 2^53163644 is an apocalyptic number.

It is an amenable number.

53163644 is a deficient number, since it is larger than the sum of its proper divisors (39872740).

53163644 is a wasteful number, since it uses less digits than its factorization.

53163644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13290915 (or 13290913 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 53163644 is about 7291.3403431742. The cubic root of 53163644 is about 376.0147779766.

Adding to 53163644 its reverse (44636135), we get a palindrome (97799779).

The spelling of 53163644 in words is "fifty-three million, one hundred sixty-three thousand, six hundred forty-four".