55551011004 has 96 divisors (see below), whose sum is σ = 150365859840. Its totient is φ = 17702144064.

The previous prime is 55551010997. The next prime is 55551011053. The reversal of 55551011004 is 40011015555.

55551011004 is a `hidden beast` number, since 5 + 5 + 551 + 0 + 1 + 100 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5477122 + ... + 5487254.

It is an arithmetic number, because the mean of its divisors is an integer number (1566311040).

Almost surely, 2^55551011004 is an apocalyptic number.

55551011004 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55551011004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75182929920).

55551011004 is an abundant number, since it is smaller than the sum of its proper divisors (94814848836).

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

55551011004 is a wasteful number, since it uses less digits than its factorization.

55551011004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12376 (or 12368 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

Adding to 55551011004 its reverse (40011015555), we get a palindrome (95562026559).

The spelling of 55551011004 in words is "fifty-five billion, five hundred fifty-one million, eleven thousand, four".