47380257 has 6 divisors (see below), whose sum is σ = 68438162. Its totient is φ = 31586832.

The previous prime is 47380247. The next prime is 47380283. The reversal of 47380257 is 75208374.

It can be written as a sum of positive squares in only one way, i.e., 30041361 + 17338896 = 5481^2 + 4164^2 .

It is not a de Polignac number, because 47380257 - 2⁸ = 47380001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47380247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2632228 + ... + 2632245.

Almost surely, 2^47380257 is an apocalyptic number.

It is an amenable number.

47380257 is a deficient number, since it is larger than the sum of its proper divisors (21057905).

47380257 is a wasteful number, since it uses less digits than its factorization.

47380257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264479 (or 5264476 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 47380257 is about 6883.3318240515. The cubic root of 47380257 is about 361.8532442378.

The spelling of 47380257 in words is "forty-seven million, three hundred eighty thousand, two hundred fifty-seven".