55101320 has 16 divisors (see below), whose sum is σ = 123978060. Its totient is φ = 22040512.

The previous prime is 55101317. The next prime is 55101323. The reversal of 55101320 is 2310155.

It is an interprime number because it is at equal distance from previous prime (55101317) and next prime (55101323).

It can be written as a sum of positive squares in 2 ways, for example, as 53202436 + 1898884 = 7294^2 + 1378^2 .

It is not an unprimeable number, because it can be changed into a prime (55101323) 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 3 ways as a sum of consecutive naturals, for example, 688727 + ... + 688806.

Almost surely, 2^55101320 is an apocalyptic number.

It is an amenable number.

55101320 is an abundant number, since it is smaller than the sum of its proper divisors (68876740).

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

55101320 is a wasteful number, since it uses less digits than its factorization.

55101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377544 (or 1377540 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55101320 is about 7423.0263370138. The cubic root of 55101320 is about 380.5286271539.

Adding to 55101320 its reverse (2310155), we get a palindrome (57411475).

The spelling of 55101320 in words is "fifty-five million, one hundred one thousand, three hundred twenty".