55317066 has 32 divisors (see below), whose sum is σ = 127259520. Its totient is φ = 15702336.

The previous prime is 55317061. The next prime is 55317071. The reversal of 55317066 is 66071355.

It is an interprime number because it is at equal distance from previous prime (55317061) and next prime (55317071).

It is not an unprimeable number, because it can be changed into a prime (55317061) 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, 2400 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (3976860).

Almost surely, 2^55317066 is an apocalyptic number.

55317066 is an abundant number, since it is smaller than the sum of its proper divisors (71942454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55317066 is a wasteful number, since it uses less digits than its factorization.

55317066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8558.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 55317066 is about 7437.5443528089. The cubic root of 55317066 is about 381.0246262353.

The spelling of 55317066 in words is "fifty-five million, three hundred seventeen thousand, sixty-six".