53077986 has 48 divisors (see below), whose sum is σ = 125044920. Its totient is φ = 16174080.

The previous prime is 53077949. The next prime is 53077987. The reversal of 53077986 is 68977035.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38675961 + 14402025 = 6219^2 + 3795^2 .

It is not an unprimeable number, because it can be changed into a prime (53077987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24466 + ... + 26546.

Almost surely, 2^53077986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53077986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62522460).

53077986 is an abundant number, since it is smaller than the sum of its proper divisors (71966934).

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

53077986 is a wasteful number, since it uses less digits than its factorization.

53077986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 53077986 is about 7285.4640209118. The cubic root of 53077986 is about 375.8127226791.

The spelling of 53077986 in words is "fifty-three million, seventy-seven thousand, nine hundred eighty-six".