47756661 has 4 divisors (see below), whose sum is σ = 63675552. Its totient is φ = 31837772.

The previous prime is 47756651. The next prime is 47756701. The reversal of 47756661 is 16665774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47756661 - 2¹⁰ = 47755637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47756651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7959441 + ... + 7959446.

It is an arithmetic number, because the mean of its divisors is an integer number (15918888).

Almost surely, 2^47756661 is an apocalyptic number.

It is an amenable number.

47756661 is a deficient number, since it is larger than the sum of its proper divisors (15918891).

47756661 is a wasteful number, since it uses less digits than its factorization.

47756661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15918890.

The product of its digits is 211680, while the sum is 42.

The square root of 47756661 is about 6910.6194367799. The cubic root of 47756661 is about 362.8089440761.

The spelling of 47756661 in words is "forty-seven million, seven hundred fifty-six thousand, six hundred sixty-one".