53661995 has 8 divisors (see below), whose sum is σ = 64447584. Its totient is φ = 42894144.

The previous prime is 53661991. The next prime is 53662019. The reversal of 53661995 is 59916635.

53661995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53661995 - 2² = 53661991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53661991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3527 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (8055948).

Almost surely, 2^53661995 is an apocalyptic number.

53661995 is a deficient number, since it is larger than the sum of its proper divisors (10785589).

53661995 is a wasteful number, since it uses less digits than its factorization.

53661995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8869.

The product of its digits is 218700, while the sum is 44.

The square root of 53661995 is about 7325.4347993822. The cubic root of 53661995 is about 377.1860348716.

The spelling of 53661995 in words is "fifty-three million, six hundred sixty-one thousand, nine hundred ninety-five".