47257145 has 16 divisors (see below), whose sum is σ = 61214160. Its totient is φ = 34815744.

The previous prime is 47257117. The next prime is 47257151. The reversal of 47257145 is 54175274.

It can be written as a sum of positive squares in 8 ways, for example, as 73984 + 47183161 = 272^2 + 6869^2 .

It is a cyclic number.

It is not a de Polignac number, because 47257145 - 2¹² = 47253049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53447 + ... + 54323.

It is an arithmetic number, because the mean of its divisors is an integer number (3825885).

Almost surely, 2^47257145 is an apocalyptic number.

It is an amenable number.

47257145 is a deficient number, since it is larger than the sum of its proper divisors (13957015).

47257145 is a wasteful number, since it uses less digits than its factorization.

47257145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its digits is 39200, while the sum is 35.

The square root of 47257145 is about 6874.3832450628. The cubic root of 47257145 is about 361.5395614237.

The spelling of 47257145 in words is "forty-seven million, two hundred fifty-seven thousand, one hundred forty-five".