55069665 has 32 divisors (see below), whose sum is σ = 102850560. Its totient is φ = 24636864.

The previous prime is 55069621. The next prime is 55069673. The reversal of 55069665 is 56696055.

It is not a de Polignac number, because 55069665 - 2¹³ = 55061473 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 645 + ... + 10514.

It is an arithmetic number, because the mean of its divisors is an integer number (3214080).

Almost surely, 2^55069665 is an apocalyptic number.

It is an amenable number.

55069665 is a deficient number, since it is larger than the sum of its proper divisors (47780895).

55069665 is a wasteful number, since it uses less digits than its factorization.

55069665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221.

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 55069665 is about 7420.8938140901. The cubic root of 55069665 is about 380.4557435937.

The spelling of 55069665 in words is "fifty-five million, sixty-nine thousand, six hundred sixty-five".