47007481 has 4 divisors (see below), whose sum is σ = 47182500. Its totient is φ = 46832464.

The previous prime is 47007421. The next prime is 47007487. The reversal of 47007481 is 18470074.

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 28987456 + 18020025 = 5384^2 + 4245^2 .

It is a cyclic number.

It is not a de Polignac number, because 47007481 - 2¹³ = 46999289 is a prime.

It is a super-2 number, since 2×47007481² = 4419406539930722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47007487) 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, 87106 + ... + 87643.

It is an arithmetic number, because the mean of its divisors is an integer number (11795625).

Almost surely, 2^47007481 is an apocalyptic number.

It is an amenable number.

47007481 is a deficient number, since it is larger than the sum of its proper divisors (175019).

47007481 is a wasteful number, since it uses less digits than its factorization.

47007481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175018.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 47007481 is about 6856.2001866923. The cubic root of 47007481 is about 360.9017542519.

The spelling of 47007481 in words is "forty-seven million, seven thousand, four hundred eighty-one".