55445845 has 32 divisors (see below), whose sum is σ = 82397952. Its totient is φ = 34877952.

The previous prime is 55445833. The next prime is 55445861. The reversal of 55445845 is 54854455.

It is a cyclic number.

It is not a de Polignac number, because 55445845 - 2⁷ = 55445717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55445798 and 55445807.

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, 105754 + ... + 106276.

It is an arithmetic number, because the mean of its divisors is an integer number (2574936).

Almost surely, 2^55445845 is an apocalyptic number.

It is an amenable number.

55445845 is a deficient number, since it is larger than the sum of its proper divisors (26952107).

55445845 is a wasteful number, since it uses less digits than its factorization.

55445845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 320000, while the sum is 40.

The square root of 55445845 is about 7446.1966801851. The cubic root of 55445845 is about 381.3200741929.

The spelling of 55445845 in words is "fifty-five million, four hundred forty-five thousand, eight hundred forty-five".