55077445 has 4 divisors (see below), whose sum is σ = 66092940. Its totient is φ = 44061952.

The previous prime is 55077431. The next prime is 55077511. The reversal of 55077445 is 54477055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 47141956 = 2817^2 + 6866^2 .

It is a cyclic number.

It is not a de Polignac number, because 55077445 - 2⁷ = 55077317 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5507740 + ... + 5507749.

It is an arithmetic number, because the mean of its divisors is an integer number (16523235).

Almost surely, 2^55077445 is an apocalyptic number.

It is an amenable number.

55077445 is a deficient number, since it is larger than the sum of its proper divisors (11015495).

55077445 is a wasteful number, since it uses less digits than its factorization.

55077445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11015494.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 55077445 is about 7421.4179911928. The cubic root of 55077445 is about 380.4736591213.

The spelling of 55077445 in words is "fifty-five million, seventy-seven thousand, four hundred forty-five".