53611650 has 72 divisors (see below), whose sum is σ = 145491060. Its totient is φ = 14152320.

The previous prime is 53611639. The next prime is 53611651. The reversal of 53611650 is 5611635.

It is a happy number.

53611650 is a `hidden beast` number, since 5 + 3 + 6 + 1 + 1 + 650 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 41563809 + 12047841 = 6447^2 + 3471^2 .

It is a super-3 number, since 3×53611650³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (53611651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48504 + ... + 49596.

Almost surely, 2^53611650 is an apocalyptic number.

53611650 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 53611650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72745530).

53611650 is an abundant number, since it is smaller than the sum of its proper divisors (91879410).

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

53611650 is a wasteful number, since it uses less digits than its factorization.

53611650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 53611650 is about 7321.9976782296. The cubic root of 53611650 is about 377.0680409197.

The spelling of 53611650 in words is "fifty-three million, six hundred eleven thousand, six hundred fifty".