53020386 has 32 divisors (see below), whose sum is σ = 119491200. Its totient is φ = 17423280.

The previous prime is 53020379. The next prime is 53020403. The reversal of 53020386 is 68302035.

It is a super-2 number, since 2×53020386² = 5622322663177992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3081 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (3734100).

Almost surely, 2^53020386 is an apocalyptic number.

53020386 is an abundant number, since it is smaller than the sum of its proper divisors (66470814).

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

53020386 is a wasteful number, since it uses less digits than its factorization.

53020386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13911 (or 13905 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 53020386 is about 7281.5098708990. The cubic root of 53020386 is about 375.6767300293.

The spelling of 53020386 in words is "fifty-three million, twenty thousand, three hundred eighty-six".