47957591 has 4 divisors (see below), whose sum is σ = 52317384. Its totient is φ = 43597800.

The previous prime is 47957573. The next prime is 47957593. The reversal of 47957591 is 19575974.

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-47957591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47957593) 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, 2179880 + ... + 2179901.

It is an arithmetic number, because the mean of its divisors is an integer number (13079346).

Almost surely, 2^47957591 is an apocalyptic number.

47957591 is a deficient number, since it is larger than the sum of its proper divisors (4359793).

47957591 is a wasteful number, since it uses less digits than its factorization.

47957591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359792.

The product of its digits is 396900, while the sum is 47.

The square root of 47957591 is about 6925.1419480037. The cubic root of 47957591 is about 363.3170561029.

The spelling of 47957591 in words is "forty-seven million, nine hundred fifty-seven thousand, five hundred ninety-one".