5451531641 has 4 divisors (see below), whose sum is σ = 5598870372. Its totient is φ = 5304192912.

The previous prime is 5451531637. The next prime is 5451531643. The reversal of 5451531641 is 1461351545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1461351545 = 5 ⋅292270309.

It can be written as a sum of positive squares in 2 ways, for example, as 4648376041 + 803155600 = 68179^2 + 28340^2 .

It is a cyclic number.

It is not a de Polignac number, because 5451531641 - 2² = 5451531637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5451531643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73669310 + ... + 73669383.

It is an arithmetic number, because the mean of its divisors is an integer number (1399717593).

Almost surely, 2^5451531641 is an apocalyptic number.

It is an amenable number.

5451531641 is a deficient number, since it is larger than the sum of its proper divisors (147338731).

5451531641 is a wasteful number, since it uses less digits than its factorization.

5451531641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147338730.

The product of its digits is 36000, while the sum is 35.

The square root of 5451531641 is about 73834.4881542494. The cubic root of 5451531641 is about 1759.9737040880.

The spelling of 5451531641 in words is "five billion, four hundred fifty-one million, five hundred thirty-one thousand, six hundred forty-one".