47543661 has 24 divisors (see below), whose sum is σ = 75138336. Its totient is φ = 28729440.

The previous prime is 47543647. The next prime is 47543663. The reversal of 47543661 is 16634574.

It is a happy number.

It is not a de Polignac number, because 47543661 - 2²⁵ = 13989229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47543663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55311 + ... + 56163.

It is an arithmetic number, because the mean of its divisors is an integer number (3130764).

Almost surely, 2^47543661 is an apocalyptic number.

It is an amenable number.

47543661 is a deficient number, since it is larger than the sum of its proper divisors (27594675).

47543661 is a wasteful number, since it uses less digits than its factorization.

47543661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1430 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 47543661 is about 6895.1911503598. The cubic root of 47543661 is about 362.2687508065.

The spelling of 47543661 in words is "forty-seven million, five hundred forty-three thousand, six hundred sixty-one".