47440451 has 4 divisors (see below), whose sum is σ = 47860392. Its totient is φ = 47020512.

The previous prime is 47440441. The next prime is 47440453. The reversal of 47440451 is 15404474.

It is a happy number.

47440451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47440451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47440453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209801 + ... + 210026.

It is an arithmetic number, because the mean of its divisors is an integer number (11965098).

Almost surely, 2^47440451 is an apocalyptic number.

47440451 is a deficient number, since it is larger than the sum of its proper divisors (419941).

47440451 is a wasteful number, since it uses less digits than its factorization.

47440451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419940.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 47440451 is about 6887.7028826743. The cubic root of 47440451 is about 362.0064175780.

The spelling of 47440451 in words is "forty-seven million, four hundred forty thousand, four hundred fifty-one".