47331645 has 16 divisors (see below), whose sum is σ = 75828480. Its totient is φ = 25210944.

The previous prime is 47331643. The next prime is 47331649. The reversal of 47331645 is 54613374.

It is not a de Polignac number, because 47331645 - 2¹ = 47331643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47331643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14067 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (4739280).

Almost surely, 2^47331645 is an apocalyptic number.

It is an amenable number.

47331645 is a deficient number, since it is larger than the sum of its proper divisors (28496835).

47331645 is a wasteful number, since it uses less digits than its factorization.

47331645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084.

The product of its digits is 30240, while the sum is 33.

The square root of 47331645 is about 6879.7997790633. The cubic root of 47331645 is about 361.7294484464.

The spelling of 47331645 in words is "forty-seven million, three hundred thirty-one thousand, six hundred forty-five".