51541343533 has 4 divisors (see below), whose sum is σ = 51551500540. Its totient is φ = 51531186528.

The previous prime is 51541343521. The next prime is 51541343537. The reversal of 51541343533 is 33534314515.

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 44606284804 + 6935058729 = 211202^2 + 83277^2 .

It is a cyclic number.

It is not a de Polignac number, because 51541343533 - 2¹³ = 51541335341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51541343492 and 51541343501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51541343537) 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, 5070888 + ... + 5081041.

It is an arithmetic number, because the mean of its divisors is an integer number (12887875135).

Almost surely, 2^51541343533 is an apocalyptic number.

It is an amenable number.

51541343533 is a deficient number, since it is larger than the sum of its proper divisors (10157007).

51541343533 is a wasteful number, since it uses less digits than its factorization.

51541343533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157006.

The product of its digits is 162000, while the sum is 37.

The spelling of 51541343533 in words is "fifty-one billion, five hundred forty-one million, three hundred forty-three thousand, five hundred thirty-three".