53863917 has 16 divisors (see below), whose sum is σ = 75840960. Its totient is φ = 33910272.

The previous prime is 53863903. The next prime is 53863919. The reversal of 53863917 is 71936835.

It is not a de Polignac number, because 53863917 - 2¹² = 53859821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53863919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18783 + ... + 21459.

It is an arithmetic number, because the mean of its divisors is an integer number (4740060).

Almost surely, 2^53863917 is an apocalyptic number.

53863917 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

53863917 is a deficient number, since it is larger than the sum of its proper divisors (21977043).

53863917 is a wasteful number, since it uses less digits than its factorization.

53863917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its digits is 136080, while the sum is 42.

The square root of 53863917 is about 7339.2041121637. The cubic root of 53863917 is about 377.6585407784.

The spelling of 53863917 in words is "fifty-three million, eight hundred sixty-three thousand, nine hundred seventeen".