53439650 has 60 divisors (see below), whose sum is σ = 110834610. Its totient is φ = 19166400.

The previous prime is 53439643. The next prime is 53439689. The reversal of 53439650 is 5693435.

It can be written as a sum of positive squares in 3 ways, for example, as 41126569 + 12313081 = 6413^2 + 3509^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53439650.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 732014 + ... + 732086.

Almost surely, 2^53439650 is an apocalyptic number.

53439650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53439650 is an abundant number, since it is smaller than the sum of its proper divisors (57394960).

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

53439650 is an equidigital number, since it uses as much as digits as its factorization.

53439650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 53439650 is about 7310.2428140247. The cubic root of 53439650 is about 376.6643650715.

The spelling of 53439650 in words is "fifty-three million, four hundred thirty-nine thousand, six hundred fifty".