47446257 has 4 divisors (see below), whose sum is σ = 63261680. Its totient is φ = 31630836.

The previous prime is 47446237. The next prime is 47446271. The reversal of 47446257 is 75264474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47446257 - 2⁶ = 47446193 is a prime.

It is a super-2 number, since 2×47446257² = 4502294606620098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47446237) 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, 7907707 + ... + 7907712.

It is an arithmetic number, because the mean of its divisors is an integer number (15815420).

Almost surely, 2^47446257 is an apocalyptic number.

It is an amenable number.

47446257 is a deficient number, since it is larger than the sum of its proper divisors (15815423).

47446257 is a wasteful number, since it uses less digits than its factorization.

47446257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15815422.

The product of its digits is 188160, while the sum is 39.

The square root of 47446257 is about 6888.1243455675. The cubic root of 47446257 is about 362.0211850284.

The spelling of 47446257 in words is "forty-seven million, four hundred forty-six thousand, two hundred fifty-seven".