61648453 has 4 divisors (see below), whose sum is σ = 61666668. Its totient is φ = 61630240.

The previous prime is 61648417. The next prime is 61648459. The reversal of 61648453 is 35484616.

It is a happy number.

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 43270084 + 18378369 = 6578^2 + 4287^2 .

It is a cyclic number.

It is not a de Polignac number, because 61648453 - 2²⁵ = 28094021 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 (61648459) 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, 2368 + ... + 11353.

It is an arithmetic number, because the mean of its divisors is an integer number (15416667).

Almost surely, 2^61648453 is an apocalyptic number.

It is an amenable number.

61648453 is a deficient number, since it is larger than the sum of its proper divisors (18215).

61648453 is a wasteful number, since it uses less digits than its factorization.

61648453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18214.

The product of its digits is 69120, while the sum is 37.

The square root of 61648453 is about 7851.6528833106. The cubic root of 61648453 is about 395.0396862331.

The spelling of 61648453 in words is "sixty-one million, six hundred forty-eight thousand, four hundred fifty-three".