47545257 has 8 divisors (see below), whose sum is σ = 63641376. Its totient is φ = 31572992.

The previous prime is 47545249. The next prime is 47545273. The reversal of 47545257 is 75254574.

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

It is a cyclic number.

It is not a de Polignac number, because 47545257 - 2³ = 47545249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47565257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30063 + ... + 31604.

It is an arithmetic number, because the mean of its divisors is an integer number (7955172).

Almost surely, 2^47545257 is an apocalyptic number.

It is an amenable number.

47545257 is a deficient number, since it is larger than the sum of its proper divisors (16096119).

47545257 is a wasteful number, since it uses less digits than its factorization.

47545257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61927.

The product of its digits is 196000, while the sum is 39.

The square root of 47545257 is about 6895.3068822207. The cubic root of 47545257 is about 362.2728044451.

It can be divided in two parts, 4754 and 5257, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 47545257 in words is "forty-seven million, five hundred forty-five thousand, two hundred fifty-seven".