53443491 has 8 divisors (see below), whose sum is σ = 73715280. Its totient is φ = 34400352.

The previous prime is 53443487. The next prime is 53443499. The reversal of 53443491 is 19434435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53443491 - 2² = 53443487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53443499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307060 + ... + 307233.

It is an arithmetic number, because the mean of its divisors is an integer number (9214410).

Almost surely, 2^53443491 is an apocalyptic number.

53443491 is a deficient number, since it is larger than the sum of its proper divisors (20271789).

53443491 is a wasteful number, since it uses less digits than its factorization.

53443491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614325.

The product of its digits is 25920, while the sum is 33.

The square root of 53443491 is about 7310.5055228760. The cubic root of 53443491 is about 376.6733891648.

The spelling of 53443491 in words is "fifty-three million, four hundred forty-three thousand, four hundred ninety-one".