53190309 has 4 divisors (see below), whose sum is σ = 70920416. Its totient is φ = 35460204.

The previous prime is 53190299. The next prime is 53190311. The reversal of 53190309 is 90309135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53190309 - 2²⁵ = 19635877 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 (53190359) 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, 8865049 + ... + 8865054.

It is an arithmetic number, because the mean of its divisors is an integer number (17730104).

Almost surely, 2^53190309 is an apocalyptic number.

It is an amenable number.

53190309 is a deficient number, since it is larger than the sum of its proper divisors (17730107).

53190309 is a wasteful number, since it uses less digits than its factorization.

53190309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17730106.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 53190309 is about 7293.1686529245. The cubic root of 53190309 is about 376.0776326988.

The spelling of 53190309 in words is "fifty-three million, one hundred ninety thousand, three hundred nine".