55020306 has 32 divisors (see below), whose sum is σ = 122842368. Its totient is φ = 16284240.

The previous prime is 55020299. The next prime is 55020311. The reversal of 55020306 is 60302055.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6856 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (3838824).

Almost surely, 2^55020306 is an apocalyptic number.

55020306 is an abundant number, since it is smaller than the sum of its proper divisors (67822062).

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

55020306 is a wasteful number, since it uses less digits than its factorization.

55020306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 55020306 is about 7417.5673909982. The cubic root of 55020306 is about 380.3420419859.

The spelling of 55020306 in words is "fifty-five million, twenty thousand, three hundred six".