51543541 has 24 divisors (see below), whose sum is σ = 65007360. Its totient is φ = 40586112.

The previous prime is 51543539. The next prime is 51543559. The reversal of 51543541 is 14534515.

It is not a de Polignac number, because 51543541 - 2¹ = 51543539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35100 + ... + 36538.

It is an arithmetic number, because the mean of its divisors is an integer number (2708640).

Almost surely, 2^51543541 is an apocalyptic number.

It is an amenable number.

51543541 is a deficient number, since it is larger than the sum of its proper divisors (13463819).

51543541 is a wasteful number, since it uses less digits than its factorization.

51543541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1506 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 51543541 is about 7179.3830514885. The cubic root of 51543541 is about 372.1557644410.

The spelling of 51543541 in words is "fifty-one million, five hundred forty-three thousand, five hundred forty-one".