53367591 has 4 divisors (see below), whose sum is σ = 71156792. Its totient is φ = 35578392.

The previous prime is 53367563. The next prime is 53367617. The reversal of 53367591 is 19576335.

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

It is not a de Polignac number, because 53367591 - 2¹⁰ = 53366567 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 (53367791) 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, 8894596 + ... + 8894601.

It is an arithmetic number, because the mean of its divisors is an integer number (17789198).

Almost surely, 2^53367591 is an apocalyptic number.

53367591 is a deficient number, since it is larger than the sum of its proper divisors (17789201).

53367591 is a wasteful number, since it uses less digits than its factorization.

53367591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17789200.

The product of its digits is 85050, while the sum is 39.

The square root of 53367591 is about 7305.3125189823. The cubic root of 53367591 is about 376.4949885490.

The spelling of 53367591 in words is "fifty-three million, three hundred sixty-seven thousand, five hundred ninety-one".