55416445 has 32 divisors (see below), whose sum is σ = 80640000. Its totient is φ = 35712576.

The previous prime is 55416409. The next prime is 55416457. The reversal of 55416445 is 54461455.

It is a 4-Lehmer number, since φ(55416445) divides (55416445-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 55416445 - 2⁹ = 55415933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55416445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110806 + ... + 111304.

It is an arithmetic number, because the mean of its divisors is an integer number (2520000).

Almost surely, 2^55416445 is an apocalyptic number.

It is an amenable number.

55416445 is a deficient number, since it is larger than the sum of its proper divisors (25223555).

55416445 is a wasteful number, since it uses less digits than its factorization.

55416445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 48000, while the sum is 34.

The square root of 55416445 is about 7444.2222562199. Note that the first 4 decimals coincide. The cubic root of 55416445 is about 381.2526643189.

The spelling of 55416445 in words is "fifty-five million, four hundred sixteen thousand, four hundred forty-five".