53787986 has 24 divisors (see below), whose sum is σ = 94138236. Its totient is φ = 22982400.

The previous prime is 53787959. The next prime is 53787989. The reversal of 53787986 is 68978735.

It can be written as a sum of positive squares in 2 ways, for example, as 52287361 + 1500625 = 7231^2 + 1225^2 .

It is not an unprimeable number, because it can be changed into a prime (53787989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44186 + ... + 45386.

Almost surely, 2^53787986 is an apocalyptic number.

53787986 is a deficient number, since it is larger than the sum of its proper divisors (40350250).

53787986 is a wasteful number, since it uses less digits than its factorization.

53787986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1667 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The square root of 53787986 is about 7334.0293154582. The cubic root of 53787986 is about 377.4809978301.

The spelling of 53787986 in words is "fifty-three million, seven hundred eighty-seven thousand, nine hundred eighty-six".