51533541 has 12 divisors (see below), whose sum is σ = 74500140. Its totient is φ = 34326720.

The previous prime is 51533539. The next prime is 51533549. The reversal of 51533541 is 14533515.

51533541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31472100 + 20061441 = 5610^2 + 4479^2 .

It is not a de Polignac number, because 51533541 - 2¹ = 51533539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17431 + ... + 20171.

It is an arithmetic number, because the mean of its divisors is an integer number (6208345).

Almost surely, 2^51533541 is an apocalyptic number.

It is an amenable number.

51533541 is a deficient number, since it is larger than the sum of its proper divisors (22966599).

51533541 is a wasteful number, since it uses less digits than its factorization.

51533541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836 (or 4833 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 51533541 is about 7178.6865790338. The cubic root of 51533541 is about 372.1316954806.

Adding to 51533541 its product of digits (4500), we get a square (51538041 = 7179²).

The spelling of 51533541 in words is "fifty-one million, five hundred thirty-three thousand, five hundred forty-one".