55645105 has 4 divisors (see below), whose sum is σ = 66774132. Its totient is φ = 44516080.

The previous prime is 55645087. The next prime is 55645111. The reversal of 55645105 is 50154655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13965169 + 41679936 = 3737^2 + 6456^2 .

It is not a de Polignac number, because 55645105 - 2⁹ = 55644593 is a prime.

It is a super-2 number, since 2×55645105² = 6192755420922050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5564506 + ... + 5564515.

It is an arithmetic number, because the mean of its divisors is an integer number (16693533).

Almost surely, 2^55645105 is an apocalyptic number.

It is an amenable number.

55645105 is a deficient number, since it is larger than the sum of its proper divisors (11129027).

55645105 is a wasteful number, since it uses less digits than its factorization.

55645105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11129026.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 55645105 is about 7459.5646655820. The cubic root of 55645105 is about 381.7763211769.

The spelling of 55645105 in words is "fifty-five million, six hundred forty-five thousand, one hundred five".