55106945 has 8 divisors (see below), whose sum is σ = 70018344. Its totient is φ = 41492224.

The previous prime is 55106927. The next prime is 55106959. The reversal of 55106945 is 54960155.

It can be written as a sum of positive squares in 4 ways, for example, as 9935104 + 45171841 = 3152^2 + 6721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55106945 - 2¹² = 55102849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324074 + ... + 324243.

It is an arithmetic number, because the mean of its divisors is an integer number (8752293).

Almost surely, 2^55106945 is an apocalyptic number.

It is an amenable number.

55106945 is a deficient number, since it is larger than the sum of its proper divisors (14911399).

55106945 is a wasteful number, since it uses less digits than its factorization.

55106945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648339.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55106945 is about 7423.4052159370. The cubic root of 55106945 is about 380.5415754263.

The spelling of 55106945 in words is "fifty-five million, one hundred six thousand, nine hundred forty-five".