55446401 has 4 divisors (see below), whose sum is σ = 58707972. Its totient is φ = 52184832.

The previous prime is 55446397. The next prime is 55446409. The reversal of 55446401 is 10464455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10464455 = 5 ⋅2092891.

It can be written as a sum of positive squares in 2 ways, for example, as 39438400 + 16008001 = 6280^2 + 4001^2 .

It is not a de Polignac number, because 55446401 - 2² = 55446397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55446409) by changing a digit.

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, 1630760 + ... + 1630793.

It is an arithmetic number, because the mean of its divisors is an integer number (14676993).

Almost surely, 2^55446401 is an apocalyptic number.

It is an amenable number.

55446401 is a deficient number, since it is larger than the sum of its proper divisors (3261571).

55446401 is a wasteful number, since it uses less digits than its factorization.

55446401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261570.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 55446401 is about 7446.2340145875. The cubic root of 55446401 is about 381.3213487894.

The spelling of 55446401 in words is "fifty-five million, four hundred forty-six thousand, four hundred one".