55520870 has 16 divisors (see below), whose sum is σ = 101062080. Its totient is φ = 21958464.

The previous prime is 55520867. The next prime is 55520891. The reversal of 55520870 is 7802555.

It is a happy number.

It is a congruent number.

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, 30302 + ... + 32081.

It is an arithmetic number, because the mean of its divisors is an integer number (6316380).

Almost surely, 2^55520870 is an apocalyptic number.

55520870 is a deficient number, since it is larger than the sum of its proper divisors (45541210).

55520870 is a wasteful number, since it uses less digits than its factorization.

55520870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62479.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 55520870 is about 7451.2327839090. The cubic root of 55520870 is about 381.4919875535.

The spelling of 55520870 in words is "fifty-five million, five hundred twenty thousand, eight hundred seventy".