53347647 has 4 divisors (see below), whose sum is σ = 71130200. Its totient is φ = 35565096.

The previous prime is 53347631. The next prime is 53347681. The reversal of 53347647 is 74674335.

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

It is not a de Polignac number, because 53347647 - 2⁴ = 53347631 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 (53340647) 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, 8891272 + ... + 8891277.

It is an arithmetic number, because the mean of its divisors is an integer number (17782550).

Almost surely, 2^53347647 is an apocalyptic number.

53347647 is a deficient number, since it is larger than the sum of its proper divisors (17782553).

53347647 is a wasteful number, since it uses less digits than its factorization.

53347647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17782552.

The product of its digits is 211680, while the sum is 39.

The square root of 53347647 is about 7303.9473574226. The cubic root of 53347647 is about 376.4480827305.

The spelling of 53347647 in words is "fifty-three million, three hundred forty-seven thousand, six hundred forty-seven".