52781650 has 24 divisors (see below), whose sum is σ = 98658864. Its totient is φ = 21008400.

The previous prime is 52781633. The next prime is 52781657. The reversal of 52781650 is 5618725.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (52781657) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8049 + ... + 13051.

It is an arithmetic number, because the mean of its divisors is an integer number (4110786).

Almost surely, 2^52781650 is an apocalyptic number.

52781650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52781650 is a deficient number, since it is larger than the sum of its proper divisors (45877214).

52781650 is a wasteful number, since it uses less digits than its factorization.

52781650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226 (or 5221 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 52781650 is about 7265.0980722906. The cubic root of 52781650 is about 375.1120257899.

The spelling of 52781650 in words is "fifty-two million, seven hundred eighty-one thousand, six hundred fifty".