53445493 has 4 divisors (see below), whose sum is σ = 53471488. Its totient is φ = 53419500.

The previous prime is 53445487. The next prime is 53445527. The reversal of 53445493 is 39454435.

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 a cyclic number.

It is not a de Polignac number, because 53445493 - 2¹³ = 53437301 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 (53445473) 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, 9621 + ... + 14122.

It is an arithmetic number, because the mean of its divisors is an integer number (13367872).

Almost surely, 2^53445493 is an apocalyptic number.

It is an amenable number.

53445493 is a deficient number, since it is larger than the sum of its proper divisors (25995).

53445493 is a wasteful number, since it uses less digits than its factorization.

53445493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25994.

The product of its digits is 129600, while the sum is 37.

The square root of 53445493 is about 7310.6424478291. The cubic root of 53445493 is about 376.6780925172.

The spelling of 53445493 in words is "fifty-three million, four hundred forty-five thousand, four hundred ninety-three".