55317270 has 16 divisors (see below), whose sum is σ = 132761520. Its totient is φ = 14751264.

The previous prime is 55317253. The next prime is 55317271. The reversal of 55317270 is 7271355.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1843909 = 55317270 / (5 + 5 + 3 + 1 + 7 + 2 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55317271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921925 + ... + 921984.

It is an arithmetic number, because the mean of its divisors is an integer number (8297595).

Almost surely, 2^55317270 is an apocalyptic number.

55317270 is an abundant number, since it is smaller than the sum of its proper divisors (77444250).

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

55317270 is a wasteful number, since it uses less digits than its factorization.

55317270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843919.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 55317270 is about 7437.5580670002. The cubic root of 55317270 is about 381.0250946195.

The spelling of 55317270 in words is "fifty-five million, three hundred seventeen thousand, two hundred seventy".