47229481 has 4 divisors (see below), whose sum is σ = 50862532. Its totient is φ = 43596432.

The previous prime is 47229473. The next prime is 47229491. The reversal of 47229481 is 18492274.

47229481 = 4859² + 4860².

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 23609881 + 23619600 = 4859^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 47229481 - 2³ = 47229473 is a prime.

It is a super-2 number, since 2×47229481² = 4461247751058722, 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 47229481.

It is not an unprimeable number, because it can be changed into a prime (47229491) 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 3 ways as a sum of consecutive naturals, for example, 1816506 + ... + 1816531.

It is an arithmetic number, because the mean of its divisors is an integer number (12715633).

Almost surely, 2^47229481 is an apocalyptic number.

47229481 is the 4860-th centered square number.

It is an amenable number.

47229481 is a deficient number, since it is larger than the sum of its proper divisors (3633051).

47229481 is a wasteful number, since it uses less digits than its factorization.

47229481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633050.

The product of its digits is 32256, while the sum is 37.

The square root of 47229481 is about 6872.3708427296. The cubic root of 47229481 is about 361.4690000818.

The spelling of 47229481 in words is "forty-seven million, two hundred twenty-nine thousand, four hundred eighty-one".