53551045917 has 16 divisors (see below), whose sum is σ = 79347725760. Its totient is φ = 35694918000.

The previous prime is 53551045903. The next prime is 53551045921. The reversal of 53551045917 is 71954015535.

53551045917 is a `hidden beast` number, since 5 + 3 + 5 + 51 + 0 + 4 + 591 + 7 = 666.

It is not a de Polignac number, because 53551045917 - 2¹⁴ = 53551029533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551045937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12742 + ... + 327512.

It is an arithmetic number, because the mean of its divisors is an integer number (4959232860).

Almost surely, 2^53551045917 is an apocalyptic number.

It is an amenable number.

53551045917 is a deficient number, since it is larger than the sum of its proper divisors (25796679843).

53551045917 is a wasteful number, since it uses less digits than its factorization.

53551045917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321081 (or 321075 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 45.

The spelling of 53551045917 in words is "fifty-three billion, five hundred fifty-one million, forty-five thousand, nine hundred seventeen".