551393472 has 336 divisors, whose sum is σ = 1834652160. Its totient is φ = 145410048.

The previous prime is 551393459. The next prime is 551393483. The reversal of 551393472 is 274393155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 551393472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11731753 + ... + 11731799.

Almost surely, 2^551393472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551393472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917326080).

551393472 is an abundant number, since it is smaller than the sum of its proper divisors (1283258688).

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

551393472 is a wasteful number, since it uses less digits than its factorization.

551393472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 551393472 is about 23481.7689282558. The cubic root of 551393472 is about 820.0126272099.

The spelling of 551393472 in words is "five hundred fifty-one million, three hundred ninety-three thousand, four hundred seventy-two".