551994612 has 192 divisors, whose sum is σ = 1539901440. Its totient is φ = 152409600.

The previous prime is 551994589. The next prime is 551994617. The reversal of 551994612 is 216499155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551994617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7774537 + ... + 7774607.

It is an arithmetic number, because the mean of its divisors is an integer number (8020320).

Almost surely, 2^551994612 is an apocalyptic number.

551994612 is a gapful number since it is divisible by the number (52) 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 551994612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769950720).

551994612 is an abundant number, since it is smaller than the sum of its proper divisors (987906828).

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

551994612 is a wasteful number, since it uses less digits than its factorization.

551994612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 212 counting only the distinct ones).

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

The square root of 551994612 is about 23494.5655844070. The cubic root of 551994612 is about 820.3105169418.

The spelling of 551994612 in words is "five hundred fifty-one million, nine hundred ninety-four thousand, six hundred twelve".