47454481 has 4 divisors (see below), whose sum is σ = 47494692. Its totient is φ = 47414272.

The previous prime is 47454479. The next prime is 47454487. The reversal of 47454481 is 18445474.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18445474 = 2 ⋅9222737.

It can be written as a sum of positive squares in 2 ways, for example, as 14288400 + 33166081 = 3780^2 + 5759^2 .

It is a cyclic number.

It is not a de Polignac number, because 47454481 - 2¹ = 47454479 is a prime.

It is a super-2 number, since 2×47454481² = 4503855533958722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47454481.

It is not an unprimeable number, because it can be changed into a prime (47454487) 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, 18280 + ... + 20713.

It is an arithmetic number, because the mean of its divisors is an integer number (11873673).

Almost surely, 2^47454481 is an apocalyptic number.

It is an amenable number.

47454481 is a deficient number, since it is larger than the sum of its proper divisors (40211).

47454481 is a wasteful number, since it uses less digits than its factorization.

47454481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40210.

The product of its digits is 71680, while the sum is 37.

The square root of 47454481 is about 6888.7212891799. The cubic root of 47454481 is about 362.0421005541.

The spelling of 47454481 in words is "forty-seven million, four hundred fifty-four thousand, four hundred eighty-one".