55511205 has 16 divisors (see below), whose sum is σ = 94042944. Its totient is φ = 27864320.

The previous prime is 55511189. The next prime is 55511207. The reversal of 55511205 is 50211555.

It is not a de Polignac number, because 55511205 - 2⁴ = 55511189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108591 + ... + 109100.

It is an arithmetic number, because the mean of its divisors is an integer number (5877684).

Almost surely, 2^55511205 is an apocalyptic number.

It is an amenable number.

55511205 is a deficient number, since it is larger than the sum of its proper divisors (38531739).

55511205 is a wasteful number, since it uses less digits than its factorization.

55511205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217716.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 55511205 is about 7450.5842052822. The cubic root of 55511205 is about 381.4698497278.

The spelling of 55511205 in words is "fifty-five million, five hundred eleven thousand, two hundred five".