55444837 has 32 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 42851328.

The previous prime is 55444811. The next prime is 55444841. The reversal of 55444837 is 73844455.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55444837 is a prime.

It is a super-3 number, since 3×55444837³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55444837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55444867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372039 + ... + 372187.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^55444837 is an apocalyptic number.

It is an amenable number.

55444837 is a deficient number, since it is larger than the sum of its proper divisors (14539163).

55444837 is a wasteful number, since it uses less digits than its factorization.

55444837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 268800, while the sum is 40.

The square root of 55444837 is about 7446.1289943164. The cubic root of 55444837 is about 381.3177633917.

The spelling of 55444837 in words is "fifty-five million, four hundred forty-four thousand, eight hundred thirty-seven".