47258521 has 16 divisors (see below), whose sum is σ = 51324624. Its totient is φ = 43352064.

The previous prime is 47258503. The next prime is 47258543. The reversal of 47258521 is 12585274.

It is a happy number.

47258521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3222025 + 44036496 = 1795^2 + 6636^2 .

It is a cyclic number.

It is not a de Polignac number, because 47258521 - 2⁵ = 47258489 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47258551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140065 + ... + 140401.

It is an arithmetic number, because the mean of its divisors is an integer number (3207789).

Almost surely, 2^47258521 is an apocalyptic number.

It is an amenable number.

47258521 is a deficient number, since it is larger than the sum of its proper divisors (4066103).

47258521 is a wasteful number, since it uses less digits than its factorization.

47258521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 22400, while the sum is 34.

The square root of 47258521 is about 6874.4833260399. The cubic root of 47258521 is about 361.5430704071.

The spelling of 47258521 in words is "forty-seven million, two hundred fifty-eight thousand, five hundred twenty-one".