53028091 has 4 divisors (see below), whose sum is σ = 53164800. Its totient is φ = 52891384.

The previous prime is 53028089. The next prime is 53028097. The reversal of 53028091 is 19082035.

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 53028091 - 2¹ = 53028089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53028097) 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, 67771 + ... + 68548.

It is an arithmetic number, because the mean of its divisors is an integer number (13291200).

Almost surely, 2^53028091 is an apocalyptic number.

53028091 is a deficient number, since it is larger than the sum of its proper divisors (136709).

53028091 is a wasteful number, since it uses less digits than its factorization.

53028091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136708.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 53028091 is about 7282.0389315081. The cubic root of 53028091 is about 375.6949271117.

The spelling of 53028091 in words is "fifty-three million, twenty-eight thousand, ninety-one".