47811465 has 56 divisors (see below), whose sum is σ = 92730120. Its totient is φ = 23514624.

The previous prime is 47811461. The next prime is 47811469. The reversal of 47811465 is 56411874.

It is a happy number.

47811465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47811461) and next prime (47811469).

It can be written as a sum of positive squares in 4 ways, for example, as 35721 + 47775744 = 189^2 + 6912^2 .

It is not a de Polignac number, because 47811465 - 2² = 47811461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47811461) 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 55 ways as a sum of consecutive naturals, for example, 46881 + ... + 47889.

It is an arithmetic number, because the mean of its divisors is an integer number (1655895).

Almost surely, 2^47811465 is an apocalyptic number.

47811465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47811465 is a deficient number, since it is larger than the sum of its proper divisors (44918655).

47811465 is a wasteful number, since it uses less digits than its factorization.

47811465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1030 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 47811465 is about 6914.5835015567. The cubic root of 47811465 is about 362.9476736268.

The spelling of 47811465 in words is "forty-seven million, eight hundred eleven thousand, four hundred sixty-five".