47478541 has 4 divisors (see below), whose sum is σ = 51794784. Its totient is φ = 43162300.

The previous prime is 47478523. The next prime is 47478551. The reversal of 47478541 is 14587474.

It is a happy number.

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 47478541 - 2¹⁹ = 46954253 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47478494 and 47478503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478521) 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, 2158105 + ... + 2158126.

It is an arithmetic number, because the mean of its divisors is an integer number (12948696).

Almost surely, 2^47478541 is an apocalyptic number.

It is an amenable number.

47478541 is a deficient number, since it is larger than the sum of its proper divisors (4316243).

47478541 is a wasteful number, since it uses less digits than its factorization.

47478541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4316242.

The product of its digits is 125440, while the sum is 40.

The square root of 47478541 is about 6890.4674006921. The cubic root of 47478541 is about 362.1032768015.

The spelling of 47478541 in words is "forty-seven million, four hundred seventy-eight thousand, five hundred forty-one".