47451445 has 4 divisors (see below), whose sum is σ = 56941740. Its totient is φ = 37961152.

The previous prime is 47451433. The next prime is 47451449. The reversal of 47451445 is 54415474.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28633201 + 18818244 = 5351^2 + 4338^2 .

It is a cyclic number.

It is not a de Polignac number, because 47451445 - 2¹⁵ = 47418677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47451445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47451449) 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, 4745140 + ... + 4745149.

It is an arithmetic number, because the mean of its divisors is an integer number (14235435).

Almost surely, 2^47451445 is an apocalyptic number.

It is an amenable number.

47451445 is a deficient number, since it is larger than the sum of its proper divisors (9490295).

47451445 is an equidigital number, since it uses as much as digits as its factorization.

47451445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490294.

The product of its digits is 44800, while the sum is 34.

The square root of 47451445 is about 6888.5009254554. The cubic root of 47451445 is about 362.0343795884.

The spelling of 47451445 in words is "forty-seven million, four hundred fifty-one thousand, four hundred forty-five".