53554591 has 4 divisors (see below), whose sum is σ = 53627800. Its totient is φ = 53481384.

The previous prime is 53554583. The next prime is 53554601. The reversal of 53554591 is 19545535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19545535 = 5 ⋅3909107.

It is a cyclic number.

It is not a de Polignac number, because 53554591 - 2³ = 53554583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53554591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53554531) 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, 35496 + ... + 36973.

It is an arithmetic number, because the mean of its divisors is an integer number (13406950).

Almost surely, 2^53554591 is an apocalyptic number.

53554591 is a deficient number, since it is larger than the sum of its proper divisors (73209).

53554591 is an equidigital number, since it uses as much as digits as its factorization.

53554591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73208.

The product of its digits is 67500, while the sum is 37.

The square root of 53554591 is about 7318.1002316175. The cubic root of 53554591 is about 376.9342219785.

It can be divided in two parts, 53554 and 591, that added together give a palindrome (54145).

The spelling of 53554591 in words is "fifty-three million, five hundred fifty-four thousand, five hundred ninety-one".