53781006 has 8 divisors (see below), whose sum is σ = 107562024. Its totient is φ = 17927000.

The previous prime is 53780999. The next prime is 53781011. The reversal of 53781006 is 60018735.

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

53781006 is an admirable number.

It is a congruent number.

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, 4481745 + ... + 4481756.

It is an arithmetic number, because the mean of its divisors is an integer number (13445253).

Almost surely, 2^53781006 is an apocalyptic number.

53781006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53781006 is a wasteful number, since it uses less digits than its factorization.

53781006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963506.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 53781006 is about 7333.5534360909. The cubic root of 53781006 is about 377.4646687107.

The spelling of 53781006 in words is "fifty-three million, seven hundred eighty-one thousand, six".