55505510 has 16 divisors (see below), whose sum is σ = 105787296. Its totient is φ = 20896128.

The previous prime is 55505497. The next prime is 55505519. The reversal of 55505510 is 1550555.

It is a self number, because there is not a number n which added to its sum of digits gives 55505510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505519) 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, 163082 + ... + 163421.

It is an arithmetic number, because the mean of its divisors is an integer number (6611706).

Almost surely, 2^55505510 is an apocalyptic number.

55505510 is a deficient number, since it is larger than the sum of its proper divisors (50281786).

55505510 is a wasteful number, since it uses less digits than its factorization.

55505510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326527.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 55505510 is about 7450.2020106840. The cubic root of 55505510 is about 381.4568040427.

The spelling of 55505510 in words is "fifty-five million, five hundred five thousand, five hundred ten".