53667745 has 4 divisors (see below), whose sum is σ = 64401300. Its totient is φ = 42934192.

The previous prime is 53667721. The next prime is 53667751. The reversal of 53667745 is 54776635.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35426304 + 18241441 = 5952^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 53667745 - 2⁹ = 53667233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366770 + ... + 5366779.

It is an arithmetic number, because the mean of its divisors is an integer number (16100325).

Almost surely, 2^53667745 is an apocalyptic number.

It is an amenable number.

53667745 is a deficient number, since it is larger than the sum of its proper divisors (10733555).

53667745 is a wasteful number, since it uses less digits than its factorization.

53667745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733554.

The product of its digits is 529200, while the sum is 43.

The square root of 53667745 is about 7325.8272570407. The cubic root of 53667745 is about 377.1995064930.

The spelling of 53667745 in words is "fifty-three million, six hundred sixty-seven thousand, seven hundred forty-five".