53863447 has 16 divisors (see below), whose sum is σ = 61666560. Its totient is φ = 46569600.

The previous prime is 53863417. The next prime is 53863451. The reversal of 53863447 is 74436835.

It is a de Polignac number, because none of the positive numbers 2^k-53863447 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 (53863417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52879 + ... + 53887.

It is an arithmetic number, because the mean of its divisors is an integer number (3854160).

Almost surely, 2^53863447 is an apocalyptic number.

53863447 is the 4642-nd heptagonal number.

53863447 is a deficient number, since it is larger than the sum of its proper divisors (7803113).

53863447 is a wasteful number, since it uses less digits than its factorization.

53863447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254.

The product of its digits is 241920, while the sum is 40.

The square root of 53863447 is about 7339.1720922731. The cubic root of 53863447 is about 377.6574423311.

The spelling of 53863447 in words is "fifty-three million, eight hundred sixty-three thousand, four hundred forty-seven".