52781642 has 8 divisors (see below), whose sum is σ = 82614816. Its totient is φ = 25243372.

The previous prime is 52781633. The next prime is 52781657. The reversal of 52781642 is 24618725.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 573668 + ... + 573759.

It is an arithmetic number, because the mean of its divisors is an integer number (10326852).

Almost surely, 2^52781642 is an apocalyptic number.

52781642 is a deficient number, since it is larger than the sum of its proper divisors (29833174).

52781642 is a wasteful number, since it uses less digits than its factorization.

52781642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147452.

The product of its digits is 26880, while the sum is 35.

The square root of 52781642 is about 7265.0975217130. The cubic root of 52781642 is about 375.1120068382.

The spelling of 52781642 in words is "fifty-two million, seven hundred eighty-one thousand, six hundred forty-two".