47240057 has 4 divisors (see below), whose sum is σ = 47254116. Its totient is φ = 47226000.

The previous prime is 47240027. The next prime is 47240071. The reversal of 47240057 is 75004274.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75004274 = 2 ⋅37502137.

It can be written as a sum of positive squares in 2 ways, for example, as 24810361 + 22429696 = 4981^2 + 4736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47240057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47240027) 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, 1307 + ... + 9807.

It is an arithmetic number, because the mean of its divisors is an integer number (11813529).

Almost surely, 2^47240057 is an apocalyptic number.

It is an amenable number.

47240057 is a deficient number, since it is larger than the sum of its proper divisors (14059).

47240057 is an equidigital number, since it uses as much as digits as its factorization.

47240057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14058.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 47240057 is about 6873.1402575533. The cubic root of 47240057 is about 361.4959790700.

The spelling of 47240057 in words is "forty-seven million, two hundred forty thousand, fifty-seven".