47431257 has 8 divisors (see below), whose sum is σ = 63354720. Its totient is φ = 31564320.

The previous prime is 47431247. The next prime is 47431259. The reversal of 47431257 is 75213474.

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

It is not a de Polignac number, because 47431257 - 2¹⁰ = 47430233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47431259) 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, 12132 + ... + 15557.

It is an arithmetic number, because the mean of its divisors is an integer number (7919340).

Almost surely, 2^47431257 is an apocalyptic number.

It is an amenable number.

47431257 is a deficient number, since it is larger than the sum of its proper divisors (15923463).

47431257 is a wasteful number, since it uses less digits than its factorization.

47431257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28263.

The product of its digits is 23520, while the sum is 33.

The square root of 47431257 is about 6887.0354289781. The cubic root of 47431257 is about 361.9830303493.

The spelling of 47431257 in words is "forty-seven million, four hundred thirty-one thousand, two hundred fifty-seven".