53065994 has 4 divisors (see below), whose sum is σ = 79598994. Its totient is φ = 26532996.

The previous prime is 53065981. The next prime is 53066011. The reversal of 53065994 is 49956035.

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., 26677225 + 26388769 = 5165^2 + 5137^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13266497 + ... + 13266500.

Almost surely, 2^53065994 is an apocalyptic number.

53065994 is a deficient number, since it is larger than the sum of its proper divisors (26533000).

53065994 is a wasteful number, since it uses less digits than its factorization.

53065994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26532999.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 53065994 is about 7284.6409657580. The cubic root of 53065994 is about 375.7844178773.

Adding to 53065994 its sum of digits (41), we get a palindrome (53066035).

The spelling of 53065994 in words is "fifty-three million, sixty-five thousand, nine hundred ninety-four".