53450869 has 4 divisors (see below), whose sum is σ = 53473644. Its totient is φ = 53428096.

The previous prime is 53450867. The next prime is 53450909. The reversal of 53450869 is 96805435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96805435 = 5 ⋅19361087.

It can be written as a sum of positive squares in 2 ways, for example, as 22515025 + 30935844 = 4745^2 + 5562^2 .

It is a cyclic number.

It is not a de Polignac number, because 53450869 - 2¹ = 53450867 is a prime.

It is a super-2 number, since 2×53450869² = 5713990793710322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53450863) 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, 7402 + ... + 12715.

It is an arithmetic number, because the mean of its divisors is an integer number (13368411).

Almost surely, 2^53450869 is an apocalyptic number.

It is an amenable number.

53450869 is a deficient number, since it is larger than the sum of its proper divisors (22775).

53450869 is a wasteful number, since it uses less digits than its factorization.

53450869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22774.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 53450869 is about 7311.0101217274. The cubic root of 53450869 is about 376.6907219172.

The spelling of 53450869 in words is "fifty-three million, four hundred fifty thousand, eight hundred sixty-nine".