53669861 has 8 divisors (see below), whose sum is σ = 62833344. Its totient is φ = 44880480.

The previous prime is 53669857. The next prime is 53669873. The reversal of 53669861 is 16896635.

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 53669861 - 2² = 53669857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53669821) 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 7 ways as a sum of consecutive naturals, for example, 93215 + ... + 93788.

It is an arithmetic number, because the mean of its divisors is an integer number (7854168).

Almost surely, 2^53669861 is an apocalyptic number.

It is an amenable number.

53669861 is a deficient number, since it is larger than the sum of its proper divisors (9163483).

53669861 is a wasteful number, since it uses less digits than its factorization.

53669861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187051.

The product of its digits is 233280, while the sum is 44.

The square root of 53669861 is about 7325.9716761669. The cubic root of 53669861 is about 377.2044638075.

The spelling of 53669861 in words is "fifty-three million, six hundred sixty-nine thousand, eight hundred sixty-one".