53111994 has 32 divisors (see below), whose sum is σ = 115463040. Its totient is φ = 16189632.

The previous prime is 53111987. The next prime is 53112013. The reversal of 53111994 is 49911135.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5379 + ... + 11625.

It is an arithmetic number, because the mean of its divisors is an integer number (3608220).

Almost surely, 2^53111994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53111994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57731520).

53111994 is an abundant number, since it is smaller than the sum of its proper divisors (62351046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53111994 is a wasteful number, since it uses less digits than its factorization.

53111994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374.

The product of its digits is 4860, while the sum is 33.

The square root of 53111994 is about 7287.7976097035. The cubic root of 53111994 is about 375.8929688189.

The spelling of 53111994 in words is "fifty-three million, one hundred eleven thousand, nine hundred ninety-four".