47255831 has 8 divisors (see below), whose sum is σ = 56849280. Its totient is φ = 38373048.

The previous prime is 47255827. The next prime is 47255833. The reversal of 47255831 is 13855274.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47255831 - 2² = 47255827 is a prime.

It is a super-2 number, since 2×47255831² = 4466227127001122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47255791 and 47255800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47255833) 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 7 ways as a sum of consecutive naturals, for example, 177521 + ... + 177786.

It is an arithmetic number, because the mean of its divisors is an integer number (7106160).

Almost surely, 2^47255831 is an apocalyptic number.

47255831 is a deficient number, since it is larger than the sum of its proper divisors (9593449).

47255831 is a wasteful number, since it uses less digits than its factorization.

47255831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355333.

The product of its digits is 33600, while the sum is 35.

The square root of 47255831 is about 6874.2876721883. The cubic root of 47255831 is about 361.5362104850.

The spelling of 47255831 in words is "forty-seven million, two hundred fifty-five thousand, eight hundred thirty-one".