52545091 has 4 divisors (see below), whose sum is σ = 52696000. Its totient is φ = 52394184.

The previous prime is 52545083. The next prime is 52545139. The reversal of 52545091 is 19054525.

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

It is a cyclic number.

It is not a de Polignac number, because 52545091 - 2³ = 52545083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52545061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74931 + ... + 75628.

It is an arithmetic number, because the mean of its divisors is an integer number (13174000).

Almost surely, 2^52545091 is an apocalyptic number.

52545091 is a deficient number, since it is larger than the sum of its proper divisors (150909).

52545091 is a wasteful number, since it uses less digits than its factorization.

52545091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150908.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 52545091 is about 7248.7992798808. The cubic root of 52545091 is about 374.5507889214.

The spelling of 52545091 in words is "fifty-two million, five hundred forty-five thousand, ninety-one".