551774100444 has 48 divisors (see below), whose sum is σ = 1471434451200. Its totient is φ = 157645794816.

The previous prime is 551774100421. The next prime is 551774100467. The reversal of 551774100444 is 444001477155.

It is an interprime number because it is at equal distance from previous prime (551774100421) and next prime (551774100467).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 551774100396 and 551774100405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5682252 + ... + 5778540.

It is an arithmetic number, because the mean of its divisors is an integer number (30654884400).

Almost surely, 2^551774100444 is an apocalyptic number.

It is an amenable number.

551774100444 is an abundant number, since it is smaller than the sum of its proper divisors (919660350756).

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

551774100444 is a wasteful number, since it uses less digits than its factorization.

551774100444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164522 (or 164520 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

Adding to 551774100444 its reverse (444001477155), we get a palindrome (995775577599).

The spelling of 551774100444 in words is "five hundred fifty-one billion, seven hundred seventy-four million, one hundred thousand, four hundred forty-four".