55144372 has 12 divisors (see below), whose sum is σ = 96560100. Its totient is φ = 27555776.

The previous prime is 55144337. The next prime is 55144373. The reversal of 55144372 is 27344155.

It can be written as a sum of positive squares in 2 ways, for example, as 14107536 + 41036836 = 3756^2 + 6406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55144373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6504 + ... + 12352.

It is an arithmetic number, because the mean of its divisors is an integer number (8046675).

Almost surely, 2^55144372 is an apocalyptic number.

It is an amenable number.

55144372 is a deficient number, since it is larger than the sum of its proper divisors (41415728).

55144372 is a wasteful number, since it uses less digits than its factorization.

55144372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210 (or 8208 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 55144372 is about 7425.9256662049. The cubic root of 55144372 is about 380.6277067744.

The spelling of 55144372 in words is "fifty-five million, one hundred forty-four thousand, three hundred seventy-two".