53447864 has 32 divisors (see below), whose sum is σ = 107924400. Its totient is φ = 24721920.

The previous prime is 53447861. The next prime is 53447897. The reversal of 53447864 is 46874435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53447861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694 + ... + 11354.

Almost surely, 2^53447864 is an apocalyptic number.

It is an amenable number.

53447864 is an abundant number, since it is smaller than the sum of its proper divisors (54476536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53447864 is a wasteful number, since it uses less digits than its factorization.

53447864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743 (or 6739 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 53447864 is about 7310.8046068815. The cubic root of 53447864 is about 376.6836626192.

The spelling of 53447864 in words is "fifty-three million, four hundred forty-seven thousand, eight hundred sixty-four".