55275240 has 32 divisors (see below), whose sum is σ = 165826080. Its totient is φ = 14740032.

The previous prime is 55275223. The next prime is 55275293. The reversal of 55275240 is 4257255.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55275198 and 55275207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230194 + ... + 230433.

It is an arithmetic number, because the mean of its divisors is an integer number (5182065).

Almost surely, 2^55275240 is an apocalyptic number.

It is an amenable number.

55275240 is an abundant number, since it is smaller than the sum of its proper divisors (110550840).

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

55275240 is a wasteful number, since it uses less digits than its factorization.

55275240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460641 (or 460637 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 55275240 is about 7434.7320059300. The cubic root of 55275240 is about 380.9285693549.

The spelling of 55275240 in words is "fifty-five million, two hundred seventy-five thousand, two hundred forty".