47045213 has 4 divisors (see below), whose sum is σ = 47816508. Its totient is φ = 46273920.

The previous prime is 47045179. The next prime is 47045237. The reversal of 47045213 is 31254074.

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 15382084 + 31663129 = 3922^2 + 5627^2 .

It is a cyclic number.

It is not a de Polignac number, because 47045213 - 2⁸ = 47044957 is a prime.

It is a super-3 number, since 3×47045213³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47045293) 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, 385556 + ... + 385677.

It is an arithmetic number, because the mean of its divisors is an integer number (11954127).

Almost surely, 2^47045213 is an apocalyptic number.

It is an amenable number.

47045213 is a deficient number, since it is larger than the sum of its proper divisors (771295).

47045213 is an equidigital number, since it uses as much as digits as its factorization.

47045213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771294.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 47045213 is about 6858.9513046821. The cubic root of 47045213 is about 360.9982913903.

Adding to 47045213 its reverse (31254074), we get a palindrome (78299287).

The spelling of 47045213 in words is "forty-seven million, forty-five thousand, two hundred thirteen".