55061665 has 16 divisors (see below), whose sum is σ = 67417920. Its totient is φ = 43163200.

The previous prime is 55061663. The next prime is 55061683. The reversal of 55061665 is 56616055.

It is not a de Polignac number, because 55061665 - 2¹ = 55061663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55061665.

It is not an unprimeable number, because it can be changed into a prime (55061663) 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, 53526 + ... + 54544.

It is an arithmetic number, because the mean of its divisors is an integer number (4213620).

Almost surely, 2^55061665 is an apocalyptic number.

It is an amenable number.

55061665 is a deficient number, since it is larger than the sum of its proper divisors (12356255).

55061665 is a wasteful number, since it uses less digits than its factorization.

55061665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55061665 is about 7420.3547758850. The cubic root of 55061665 is about 380.4373196977.

The spelling of 55061665 in words is "fifty-five million, sixty-one thousand, six hundred sixty-five".