51611432 has 16 divisors (see below), whose sum is σ = 96884640. Its totient is φ = 25775536.

The previous prime is 51611431. The next prime is 51611449. The reversal of 51611432 is 23411615.

It is a junction number, because it is equal to n+sod(n) for n = 51611398 and 51611407.

It is not an unprimeable number, because it can be changed into a prime (51611431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583 + ... + 11145.

It is an arithmetic number, because the mean of its divisors is an integer number (6055290).

Almost surely, 2^51611432 is an apocalyptic number.

It is an amenable number.

51611432 is a deficient number, since it is larger than the sum of its proper divisors (45273208).

51611432 is a wasteful number, since it uses less digits than its factorization.

51611432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552 (or 7548 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 51611432 is about 7184.1096873586. The cubic root of 51611432 is about 372.3190887651.

The spelling of 51611432 in words is "fifty-one million, six hundred eleven thousand, four hundred thirty-two".