53553917 has 8 divisors (see below), whose sum is σ = 54093312. Its totient is φ = 53017600.

The previous prime is 53553869. The next prime is 53553931. The reversal of 53553917 is 71935535.

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

It is a cyclic number.

It is not a de Polignac number, because 53553917 - 2¹⁶ = 53488381 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 (53553967) 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, 48542 + ... + 49632.

It is an arithmetic number, because the mean of its divisors is an integer number (6761664).

Almost surely, 2^53553917 is an apocalyptic number.

It is an amenable number.

53553917 is a deficient number, since it is larger than the sum of its proper divisors (539395).

53553917 is a wasteful number, since it uses less digits than its factorization.

53553917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539.

The product of its digits is 70875, while the sum is 38.

The square root of 53553917 is about 7318.0541812698. The cubic root of 53553917 is about 376.9326406965.

The spelling of 53553917 in words is "fifty-three million, five hundred fifty-three thousand, nine hundred seventeen".