55322401 has 4 divisors (see below), whose sum is σ = 57230100. Its totient is φ = 53414704.

The previous prime is 55322389. The next prime is 55322411. The reversal of 55322401 is 10422355.

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 23512801 + 31809600 = 4849^2 + 5640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55322401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55322411) 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, 953806 + ... + 953863.

It is an arithmetic number, because the mean of its divisors is an integer number (14307525).

Almost surely, 2^55322401 is an apocalyptic number.

It is an amenable number.

55322401 is a deficient number, since it is larger than the sum of its proper divisors (1907699).

55322401 is a wasteful number, since it uses less digits than its factorization.

55322401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907698.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55322401 is about 7437.9029974852. The cubic root of 55322401 is about 381.0368750232.

Adding to 55322401 its reverse (10422355), we get a palindrome (65744756).

It can be divided in two parts, 553 and 22401, that multiplied together give a triangular number (12387753 = T₄₉₇₇).

The spelling of 55322401 in words is "fifty-five million, three hundred twenty-two thousand, four hundred one".