51543036 has 18 divisors (see below), whose sum is σ = 130289432. Its totient is φ = 17181000.

The previous prime is 51543017. The next prime is 51543043. The reversal of 51543036 is 63034515.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 715840 + ... + 715911.

Almost surely, 2^51543036 is an apocalyptic number.

It is an amenable number.

51543036 is an abundant number, since it is smaller than the sum of its proper divisors (78746396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51543036 is a wasteful number, since it uses less digits than its factorization.

51543036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431761 (or 1431756 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 51543036 is about 7179.3478812494. The cubic root of 51543036 is about 372.1545490331.

The spelling of 51543036 in words is "fifty-one million, five hundred forty-three thousand, thirty-six".