55072270 has 32 divisors (see below), whose sum is σ = 109234656. Its totient is φ = 19824000.

The previous prime is 55072201. The next prime is 55072289. The reversal of 55072270 is 7227055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632 + ... + 13588.

It is an arithmetic number, because the mean of its divisors is an integer number (3413583).

Almost surely, 2^55072270 is an apocalyptic number.

55072270 is a deficient number, since it is larger than the sum of its proper divisors (54162386).

55072270 is a wasteful number, since it uses less digits than its factorization.

55072270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 55072270 is about 7421.0693299551. The cubic root of 55072270 is about 380.4617424898.

It can be divided in two parts, 5507 and 2270, that added together give a palindrome (7777).

The spelling of 55072270 in words is "fifty-five million, seventy-two thousand, two hundred seventy".