55041040 has 20 divisors (see below), whose sum is σ = 127970604. Its totient is φ = 22016384.

The previous prime is 55041031. The next prime is 55041059. The reversal of 55041040 is 4014055.

It can be written as a sum of positive squares in 2 ways, for example, as 27541504 + 27499536 = 5248^2 + 5244^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 55040999 and 55041017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343927 + ... + 344086.

Almost surely, 2^55041040 is an apocalyptic number.

It is an amenable number.

55041040 is an abundant number, since it is smaller than the sum of its proper divisors (72929564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55041040 is a wasteful number, since it uses less digits than its factorization.

55041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688026 (or 688020 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 55041040 is about 7418.9648873680. The cubic root of 55041040 is about 380.3898123582.

Adding to 55041040 its reverse (4014055), we get a palindrome (59055095).

The spelling of 55041040 in words is "fifty-five million, forty-one thousand, forty".