55801445 has 24 divisors (see below), whose sum is σ = 78223608. Its totient is φ = 38102400.

The previous prime is 55801409. The next prime is 55801453. The reversal of 55801445 is 54410855.

It can be written as a sum of positive squares in 4 ways, for example, as 432964 + 55368481 = 658^2 + 7441^2 .

It is not a de Polignac number, because 55801445 - 2⁸ = 55801189 is a prime.

It is a super-2 number, since 2×55801445² = 6227602528176050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102875 + ... + 103415.

It is an arithmetic number, because the mean of its divisors is an integer number (3259317).

Almost surely, 2^55801445 is an apocalyptic number.

It is an amenable number.

55801445 is a deficient number, since it is larger than the sum of its proper divisors (22422163).

55801445 is a wasteful number, since it uses less digits than its factorization.

55801445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 55801445 is about 7470.0364791613. The cubic root of 55801445 is about 382.1335319836.

The spelling of 55801445 in words is "fifty-five million, eight hundred one thousand, four hundred forty-five".