55474445 has 16 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 40874304.

The previous prime is 55474423. The next prime is 55474453. The reversal of 55474445 is 54447455.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55474445 - 2¹⁰ = 55473421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55474399 and 55474408.

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, 46142 + ... + 47328.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^55474445 is an apocalyptic number.

It is an amenable number.

55474445 is a deficient number, since it is larger than the sum of its proper divisors (16375795).

55474445 is a wasteful number, since it uses less digits than its factorization.

55474445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its digits is 224000, while the sum is 38.

The square root of 55474445 is about 7448.1168760969. The cubic root of 55474445 is about 381.3856269229.

The spelling of 55474445 in words is "fifty-five million, four hundred seventy-four thousand, four hundred forty-five".