47551665 has 16 divisors (see below), whose sum is σ = 86951808. Its totient is φ = 21737856.

The previous prime is 47551657. The next prime is 47551667. The reversal of 47551665 is 56615574.

47551665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47551665 - 2³ = 47551657 is a prime.

It is a super-2 number, since 2×47551665² = 4522321688544450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47551667) 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 15 ways as a sum of consecutive naturals, for example, 226332 + ... + 226541.

It is an arithmetic number, because the mean of its divisors is an integer number (5434488).

Almost surely, 2^47551665 is an apocalyptic number.

It is an amenable number.

47551665 is a deficient number, since it is larger than the sum of its proper divisors (39400143).

47551665 is a wasteful number, since it uses less digits than its factorization.

47551665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452888.

The product of its digits is 126000, while the sum is 39.

The square root of 47551665 is about 6895.7715304381. The cubic root of 47551665 is about 362.2890790432.

The spelling of 47551665 in words is "forty-seven million, five hundred fifty-one thousand, six hundred sixty-five".