53065650 has 96 divisors (see below), whose sum is σ = 148651200. Its totient is φ = 12409600.

The previous prime is 53065633. The next prime is 53065657. The reversal of 53065650 is 5656035.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53065657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47296 + ... + 48404.

It is an arithmetic number, because the mean of its divisors is an integer number (1548450).

Almost surely, 2^53065650 is an apocalyptic number.

53065650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53065650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74325600).

53065650 is an abundant number, since it is smaller than the sum of its proper divisors (95585550).

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

53065650 is a wasteful number, since it uses less digits than its factorization.

53065650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 53065650 is about 7284.6173543982. The cubic root of 53065650 is about 375.7836058688.

The spelling of 53065650 in words is "fifty-three million, sixty-five thousand, six hundred fifty".