47254187 has 4 divisors (see below), whose sum is σ = 47268840. Its totient is φ = 47239536.

The previous prime is 47254183. The next prime is 47254201. The reversal of 47254187 is 78145274.

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: 78145274 = 2 ⋅39072637.

It is a cyclic number.

It is not a de Polignac number, because 47254187 - 2² = 47254183 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47254187.

It is not an unprimeable number, because it can be changed into a prime (47254183) 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, 137 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (11817210).

Almost surely, 2^47254187 is an apocalyptic number.

47254187 is a deficient number, since it is larger than the sum of its proper divisors (14653).

47254187 is an equidigital number, since it uses as much as digits as its factorization.

47254187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14652.

The product of its digits is 62720, while the sum is 38.

The square root of 47254187 is about 6874.1680951225. The cubic root of 47254187 is about 361.5320178989.

The spelling of 47254187 in words is "forty-seven million, two hundred fifty-four thousand, one hundred eighty-seven".