47545457 has 4 divisors (see below), whose sum is σ = 47629296. Its totient is φ = 47461620.

The previous prime is 47545451. The next prime is 47545483. The reversal of 47545457 is 75454574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47545457 - 2¹⁶ = 47479921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47545451) 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, 41063 + ... + 42204.

It is an arithmetic number, because the mean of its divisors is an integer number (11907324).

Almost surely, 2^47545457 is an apocalyptic number.

It is an amenable number.

47545457 is a deficient number, since it is larger than the sum of its proper divisors (83839).

47545457 is an equidigital number, since it uses as much as digits as its factorization.

47545457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83838.

The product of its digits is 392000, while the sum is 41.

The square root of 47545457 is about 6895.3213848232. The cubic root of 47545457 is about 362.2733124135.

The spelling of 47545457 in words is "forty-seven million, five hundred forty-five thousand, four hundred fifty-seven".