55431436 has 24 divisors (see below), whose sum is σ = 102932480. Its totient is φ = 26045712.

The previous prime is 55431421. The next prime is 55431443. The reversal of 55431436 is 63413455.

It is a junction number, because it is equal to n+sod(n) for n = 55431398 and 55431407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6781 + ... + 12523.

Almost surely, 2^55431436 is an apocalyptic number.

It is an amenable number.

55431436 is a deficient number, since it is larger than the sum of its proper divisors (47501044).

55431436 is a wasteful number, since it uses less digits than its factorization.

55431436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893 (or 5891 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 55431436 is about 7445.2290763952. The cubic root of 55431436 is about 381.2870394543.

The spelling of 55431436 in words is "fifty-five million, four hundred thirty-one thousand, four hundred thirty-six".