53116786 has 4 divisors (see below), whose sum is σ = 79675182. Its totient is φ = 26558392.

The previous prime is 53116781. The next prime is 53116807. The reversal of 53116786 is 68761135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68761135 = 5 ⋅13752227.

It can be written as a sum of positive squares in only one way, i.e., 51566761 + 1550025 = 7181^2 + 1245^2 .

It is not an unprimeable number, because it can be changed into a prime (53116781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13279195 + ... + 13279198.

Almost surely, 2^53116786 is an apocalyptic number.

53116786 is a deficient number, since it is larger than the sum of its proper divisors (26558396).

53116786 is a wasteful number, since it uses less digits than its factorization.

53116786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26558395.

The product of its digits is 30240, while the sum is 37.

The square root of 53116786 is about 7288.1263710229. The cubic root of 53116786 is about 375.9042733900.

The spelling of 53116786 in words is "fifty-three million, one hundred sixteen thousand, seven hundred eighty-six".