551228895412 has 54 divisors (see below), whose sum is σ = 1047389182854. Its totient is φ = 252340153920.

The previous prime is 551228895403. The next prime is 551228895421. The reversal of 551228895412 is 214598822155.

It is an interprime number because it is at equal distance from previous prime (551228895403) and next prime (551228895421).

It can be written as a sum of positive squares in 3 ways, for example, as 30805164196 + 520423731216 = 175514^2 + 721404^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 551228895412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 797725987 + ... + 797726677.

Almost surely, 2^551228895412 is an apocalyptic number.

551228895412 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

551228895412 is a deficient number, since it is larger than the sum of its proper divisors (496160287442).

551228895412 is an equidigital number, since it uses as much as digits as its factorization.

551228895412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 855 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 52.

Multiplying 551228895412 by its sum of digits (52), we get a square (28663902561424 = 5353868²).

551228895412 divided by its sum of digits (52) gives a square (10600555681 = 102959²).

The spelling of 551228895412 in words is "five hundred fifty-one billion, two hundred twenty-eight million, eight hundred ninety-five thousand, four hundred twelve".