53611994 has 4 divisors (see below), whose sum is σ = 80417994. Its totient is φ = 26805996.

The previous prime is 53611973. The next prime is 53612021. The reversal of 53611994 is 49911635.

53611994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28761769 + 24850225 = 5363^2 + 4985^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13402997 + ... + 13403000.

Almost surely, 2^53611994 is an apocalyptic number.

53611994 is a deficient number, since it is larger than the sum of its proper divisors (26806000).

53611994 is a wasteful number, since it uses less digits than its factorization.

53611994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26805999.

The product of its digits is 29160, while the sum is 38.

The square root of 53611994 is about 7322.0211690489. The cubic root of 53611994 is about 377.0688474057.

The spelling of 53611994 in words is "fifty-three million, six hundred eleven thousand, nine hundred ninety-four".