53617617 has 6 divisors (see below), whose sum is σ = 77447682. Its totient is φ = 35745072.

The previous prime is 53617589. The next prime is 53617651. The reversal of 53617617 is 71671635.

53617617 is a `hidden beast` number, since 5 + 36 + 1 + 7 + 617 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 25644096 = 5289^2 + 5064^2 .

It is not a de Polignac number, because 53617617 - 2¹⁵ = 53584849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53617657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2978748 + ... + 2978765.

It is an arithmetic number, because the mean of its divisors is an integer number (12907947).

Almost surely, 2^53617617 is an apocalyptic number.

It is an amenable number.

53617617 is a deficient number, since it is larger than the sum of its proper divisors (23830065).

53617617 is a wasteful number, since it uses less digits than its factorization.

53617617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957519 (or 5957516 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 53617617 is about 7322.4051376580. The cubic root of 53617617 is about 377.0820296798.

The spelling of 53617617 in words is "fifty-three million, six hundred seventeen thousand, six hundred seventeen".