53782066 has 16 divisors (see below), whose sum is σ = 89875800. Its totient is φ = 23966208.

The previous prime is 53782063. The next prime is 53782081. The reversal of 53782066 is 66028735.

It can be written as a sum of positive squares in 4 ways, for example, as 20385225 + 33396841 = 4515^2 + 5779^2 .

It is not an unprimeable number, because it can be changed into a prime (53782063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34911 + ... + 36418.

Almost surely, 2^53782066 is an apocalyptic number.

53782066 is a deficient number, since it is larger than the sum of its proper divisors (36093734).

53782066 is a wasteful number, since it uses less digits than its factorization.

53782066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71373.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 53782066 is about 7333.6257062929. The cubic root of 53782066 is about 377.4671485820.

The spelling of 53782066 in words is "fifty-three million, seven hundred eighty-two thousand, sixty-six".