47213569 has 4 divisors (see below), whose sum is σ = 50845396. Its totient is φ = 43581744.

The previous prime is 47213567. The next prime is 47213581. The reversal of 47213569 is 96531274.

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 30305025 + 16908544 = 5505^2 + 4112^2 .

It is a cyclic number.

It is not a de Polignac number, because 47213569 - 2¹ = 47213567 is a prime.

It is a super-2 number, since 2×47213569² = 4458242195435522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47213567) 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, 1815894 + ... + 1815919.

It is an arithmetic number, because the mean of its divisors is an integer number (12711349).

Almost surely, 2^47213569 is an apocalyptic number.

It is an amenable number.

47213569 is a deficient number, since it is larger than the sum of its proper divisors (3631827).

47213569 is a wasteful number, since it uses less digits than its factorization.

47213569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631826.

The product of its digits is 45360, while the sum is 37.

The square root of 47213569 is about 6871.2130661187. The cubic root of 47213569 is about 361.4284015640.

It can be divided in two parts, 472 and 13569, that added together give a palindrome (14041).

The spelling of 47213569 in words is "forty-seven million, two hundred thirteen thousand, five hundred sixty-nine".