55432405 has 16 divisors (see below), whose sum is σ = 80023680. Its totient is φ = 36009792.

The previous prime is 55432397. The next prime is 55432423. The reversal of 55432405 is 50423455.

It is not a de Polignac number, because 55432405 - 2³ = 55432397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41014 + ... + 42343.

It is an arithmetic number, because the mean of its divisors is an integer number (5001480).

Almost surely, 2^55432405 is an apocalyptic number.

It is an amenable number.

55432405 is a deficient number, since it is larger than the sum of its proper divisors (24591275).

55432405 is a wasteful number, since it uses less digits than its factorization.

55432405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83388.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 55432405 is about 7445.2941513415. The cubic root of 55432405 is about 381.2892612080.

The spelling of 55432405 in words is "fifty-five million, four hundred thirty-two thousand, four hundred five".