51545520441 has 6 divisors (see below), whose sum is σ = 74454640650. Its totient is φ = 34363680288.

The previous prime is 51545520427. The next prime is 51545520443. The reversal of 51545520441 is 14402554515.

51545520441 is a `hidden beast` number, since 51 + 5 + 45 + 520 + 4 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48984755625 + 2560764816 = 221325^2 + 50604^2 .

It is not a de Polignac number, because 51545520441 - 2⁹ = 51545519929 is a prime.

It is a super-3 number, since 3×51545520441³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51545520396 and 51545520405.

It is not an unprimeable number, because it can be changed into a prime (51545520443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2863640016 + ... + 2863640033.

It is an arithmetic number, because the mean of its divisors is an integer number (12409106775).

Almost surely, 2^51545520441 is an apocalyptic number.

It is an amenable number.

51545520441 is a deficient number, since it is larger than the sum of its proper divisors (22909120209).

51545520441 is a wasteful number, since it uses less digits than its factorization.

51545520441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727280055 (or 5727280052 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 51545520441 in words is "fifty-one billion, five hundred forty-five million, five hundred twenty thousand, four hundred forty-one".