5450038661 has 4 divisors (see below), whose sum is σ = 5452769772. Its totient is φ = 5447307552.

The previous prime is 5450038639. The next prime is 5450038663. The reversal of 5450038661 is 1668300545.

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 3145078561 + 2304960100 = 56081^2 + 48010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5450038661 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 (5450038663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362560 + ... + 1366553.

It is an arithmetic number, because the mean of its divisors is an integer number (1363192443).

Almost surely, 2^5450038661 is an apocalyptic number.

It is an amenable number.

5450038661 is a deficient number, since it is larger than the sum of its proper divisors (2731111).

5450038661 is a wasteful number, since it uses less digits than its factorization.

5450038661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731110.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 5450038661 is about 73824.3771460349. The cubic root of 5450038661 is about 1759.8130247524.

The spelling of 5450038661 in words is "five billion, four hundred fifty million, thirty-eight thousand, six hundred sixty-one".