55655240 has 16 divisors (see below), whose sum is σ = 125224380. Its totient is φ = 22262080.

The previous prime is 55655221. The next prime is 55655269. The reversal of 55655240 is 4255655.

It can be written as a sum of positive squares in 2 ways, for example, as 54848836 + 806404 = 7406^2 + 898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55655197 and 55655206.

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, 695651 + ... + 695730.

Almost surely, 2^55655240 is an apocalyptic number.

It is an amenable number.

55655240 is an abundant number, since it is smaller than the sum of its proper divisors (69569140).

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

55655240 is a wasteful number, since it uses less digits than its factorization.

55655240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391392 (or 1391388 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 55655240 is about 7460.2439638393. The cubic root of 55655240 is about 381.7994982268.

The spelling of 55655240 in words is "fifty-five million, six hundred fifty-five thousand, two hundred forty".