55390101 has 8 divisors (see below), whose sum is σ = 79534560. Its totient is φ = 34086192.

The previous prime is 55390091. The next prime is 55390103. The reversal of 55390101 is 10109355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55390101 - 2⁷ = 55389973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55390103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710091 + ... + 710168.

It is an arithmetic number, because the mean of its divisors is an integer number (9941820).

Almost surely, 2^55390101 is an apocalyptic number.

It is an amenable number.

55390101 is a deficient number, since it is larger than the sum of its proper divisors (24144459).

55390101 is a wasteful number, since it uses less digits than its factorization.

55390101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420275.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 55390101 is about 7442.4526199365. The cubic root of 55390101 is about 381.1922411470.

Adding to 55390101 its reverse (10109355), we get a palindrome (65499456).

The spelling of 55390101 in words is "fifty-five million, three hundred ninety thousand, one hundred one".