55809309102 has 16 divisors (see below), whose sum is σ = 117493282560. Its totient is φ = 17623992312.

The previous prime is 55809309079. The next prime is 55809309103. The reversal of 55809309102 is 20190390855.

It is a super-2 number, since 2×55809309102² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55809309103) 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, 244777558 + ... + 244777785.

It is an arithmetic number, because the mean of its divisors is an integer number (7343330160).

Almost surely, 2^55809309102 is an apocalyptic number.

55809309102 is an abundant number, since it is smaller than the sum of its proper divisors (61683973458).

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

55809309102 is a wasteful number, since it uses less digits than its factorization.

55809309102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489555367.

The product of its (nonzero) digits is 97200, while the sum is 42.

Adding to 55809309102 its reverse (20190390855), we get a palindrome (75999699957).

The spelling of 55809309102 in words is "fifty-five billion, eight hundred nine million, three hundred nine thousand, one hundred two".