47257207 has 4 divisors (see below), whose sum is σ = 47904640. Its totient is φ = 46609776.

The previous prime is 47257183. The next prime is 47257213. The reversal of 47257207 is 70275274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47257207 is a prime.

It is a super-2 number, since 2×47257207² = 4466487226881698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47255207) 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, 323607 + ... + 323752.

It is an arithmetic number, because the mean of its divisors is an integer number (11976160).

Almost surely, 2^47257207 is an apocalyptic number.

47257207 is a deficient number, since it is larger than the sum of its proper divisors (647433).

47257207 is an equidigital number, since it uses as much as digits as its factorization.

47257207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647432.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 47257207 is about 6874.3877545568. The cubic root of 47257207 is about 361.5397195334.

The spelling of 47257207 in words is "forty-seven million, two hundred fifty-seven thousand, two hundred seven".