51584045449 has 8 divisors (see below), whose sum is σ = 51882570792. Its totient is φ = 51286179840.

The previous prime is 51584045431. The next prime is 51584045453. The reversal of 51584045449 is 94454048515.

It can be written as a sum of positive squares in 4 ways, for example, as 35521600 + 51548523849 = 5960^2 + 227043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51584045449 - 2³³ = 42994110857 is a prime.

It is a super-2 number, since 2×51584045449² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51584045419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7672 + ... + 321289.

It is an arithmetic number, because the mean of its divisors is an integer number (6485321349).

Almost surely, 2^51584045449 is an apocalyptic number.

It is an amenable number.

51584045449 is a deficient number, since it is larger than the sum of its proper divisors (298525343).

51584045449 is a wasteful number, since it uses less digits than its factorization.

51584045449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329867.

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 51584045449 in words is "fifty-one billion, five hundred eighty-four million, forty-five thousand, four hundred forty-nine".