47531645 has 8 divisors (see below), whose sum is σ = 65186304. Its totient is φ = 32593104.

The previous prime is 47531623. The next prime is 47531651. The reversal of 47531645 is 54613574.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47531645 - 2⁶ = 47531581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1358047 = 47531645 / (4 + 7 + 5 + 3 + 1 + 6 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678989 + ... + 679058.

It is an arithmetic number, because the mean of its divisors is an integer number (8148288).

Almost surely, 2^47531645 is an apocalyptic number.

It is an amenable number.

47531645 is a deficient number, since it is larger than the sum of its proper divisors (17654659).

47531645 is a wasteful number, since it uses less digits than its factorization.

47531645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358059.

The product of its digits is 50400, while the sum is 35.

The square root of 47531645 is about 6894.3197633994. The cubic root of 47531645 is about 362.2382287699.

The spelling of 47531645 in words is "forty-seven million, five hundred thirty-one thousand, six hundred forty-five".