53189491 has 8 divisors (see below), whose sum is σ = 54210960. Its totient is φ = 52174848.

The previous prime is 53189483. The next prime is 53189533. The reversal of 53189491 is 19498135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53189491 - 2³ = 53189483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53189401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15675 + ... + 18763.

It is an arithmetic number, because the mean of its divisors is an integer number (6776370).

Almost surely, 2^53189491 is an apocalyptic number.

53189491 is a deficient number, since it is larger than the sum of its proper divisors (1021469).

53189491 is a wasteful number, since it uses less digits than its factorization.

53189491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413.

The product of its digits is 38880, while the sum is 40.

The square root of 53189491 is about 7293.1125728320. The cubic root of 53189491 is about 376.0757048220.

The spelling of 53189491 in words is "fifty-three million, one hundred eighty-nine thousand, four hundred ninety-one".