47251645 has 8 divisors (see below), whose sum is σ = 64802304. Its totient is φ = 32401104.

The previous prime is 47251621. The next prime is 47251649. The reversal of 47251645 is 54615274.

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 47251645 - 2¹¹ = 47249597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47251645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47251649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674989 + ... + 675058.

It is an arithmetic number, because the mean of its divisors is an integer number (8100288).

Almost surely, 2^47251645 is an apocalyptic number.

It is an amenable number.

47251645 is a deficient number, since it is larger than the sum of its proper divisors (17550659).

47251645 is a wasteful number, since it uses less digits than its factorization.

47251645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350059.

The product of its digits is 33600, while the sum is 34.

The square root of 47251645 is about 6873.9831975355. The cubic root of 47251645 is about 361.5255350104.

The spelling of 47251645 in words is "forty-seven million, two hundred fifty-one thousand, six hundred forty-five".