53617861 has 8 divisors (see below), whose sum is σ = 59853024. Its totient is φ = 47609520.

The previous prime is 53617859. The next prime is 53617871. The reversal of 53617861 is 16871635.

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 53617861 - 2¹ = 53617859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53617861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53617801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56206 + ... + 57151.

It is an arithmetic number, because the mean of its divisors is an integer number (7481628).

Almost surely, 2^53617861 is an apocalyptic number.

It is an amenable number.

53617861 is a deficient number, since it is larger than the sum of its proper divisors (6235163).

53617861 is a wasteful number, since it uses less digits than its factorization.

53617861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113411.

The product of its digits is 30240, while the sum is 37.

The square root of 53617861 is about 7322.4217988313. The cubic root of 53617861 is about 377.0826016801.

The spelling of 53617861 in words is "fifty-three million, six hundred seventeen thousand, eight hundred sixty-one".