55875840 has 72 divisors (see below), whose sum is σ = 178465728. Its totient is φ = 14899200.

The previous prime is 55875839. The next prime is 55875847. The reversal of 55875840 is 4857855.

It is a junction number, because it is equal to n+sod(n) for n = 55875792 and 55875801.

It is not an unprimeable number, because it can be changed into a prime (55875847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3436 + ... + 11115.

Almost surely, 2^55875840 is an apocalyptic number.

It is an amenable number.

55875840 is an abundant number, since it is smaller than the sum of its proper divisors (122589888).

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

55875840 is a wasteful number, since it uses less digits than its factorization.

55875840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14575 (or 14561 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 55875840 is about 7475.0143812571. The cubic root of 55875840 is about 382.3032778842.

The spelling of 55875840 in words is "fifty-five million, eight hundred seventy-five thousand, eight hundred forty".