53447858 has 4 divisors (see below), whose sum is σ = 80171790. Its totient is φ = 26723928.

The previous prime is 53447857. The next prime is 53447861. The reversal of 53447858 is 85874435.

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

It can be written as a sum of positive squares in only one way, i.e., 53042089 + 405769 = 7283^2 + 637^2 .

It is not an unprimeable number, because it can be changed into a prime (53447851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13361963 + ... + 13361966.

Almost surely, 2^53447858 is an apocalyptic number.

53447858 is a deficient number, since it is larger than the sum of its proper divisors (26723932).

53447858 is a wasteful number, since it uses less digits than its factorization.

53447858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26723931.

The product of its digits is 537600, while the sum is 44.

The square root of 53447858 is about 7310.8041965300. The cubic root of 53447858 is about 376.6836485239.

The spelling of 53447858 in words is "fifty-three million, four hundred forty-seven thousand, eight hundred fifty-eight".