47566913 has 4 divisors (see below), whose sum is σ = 47583060. Its totient is φ = 47550768.

The previous prime is 47566891. The next prime is 47566933. The reversal of 47566913 is 31966574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31966574 = 2 ⋅15983287.

It can be written as a sum of positive squares in 2 ways, for example, as 30658369 + 16908544 = 5537^2 + 4112^2 .

It is a cyclic number.

It is not a de Polignac number, because 47566913 - 2¹² = 47562817 is a prime.

It is a super-2 number, since 2×47566913² = 4525222424699138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47566933) 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 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (11895765).

Almost surely, 2^47566913 is an apocalyptic number.

It is an amenable number.

47566913 is a deficient number, since it is larger than the sum of its proper divisors (16147).

47566913 is a wasteful number, since it uses less digits than its factorization.

47566913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16146.

The product of its digits is 136080, while the sum is 41.

The square root of 47566913 is about 6896.8770468959. The cubic root of 47566913 is about 362.3277989879.

The spelling of 47566913 in words is "forty-seven million, five hundred sixty-six thousand, nine hundred thirteen".