47370781 has 6 divisors (see below), whose sum is σ = 49995582. Its totient is φ = 44877240.

The previous prime is 47370773. The next prime is 47370787. The reversal of 47370781 is 18707374.

47370781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47045881 + 324900 = 6859^2 + 570^2 .

It is not a de Polignac number, because 47370781 - 2³ = 47370773 is a prime.

It is a super-2 number, since 2×47370781² = 4487981785099922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 47370781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47370787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65250 + ... + 65971.

It is an arithmetic number, because the mean of its divisors is an integer number (8332597).

Almost surely, 2^47370781 is an apocalyptic number.

It is an amenable number.

47370781 is a deficient number, since it is larger than the sum of its proper divisors (2624801).

47370781 is a wasteful number, since it uses less digits than its factorization.

47370781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131259 (or 131240 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 47370781 is about 6882.6434601830. The cubic root of 47370781 is about 361.8291192107.

The spelling of 47370781 in words is "forty-seven million, three hundred seventy thousand, seven hundred eighty-one".