551356416 has 288 divisors, whose sum is σ = 1798524000. Its totient is φ = 166772736.

The previous prime is 551356411. The next prime is 551356423. The reversal of 551356416 is 614653155.

551356416 is a `hidden beast` number, since 5 + 5 + 1 + 3 + 5 + 641 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (551356411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9344995 + ... + 9345053.

It is an arithmetic number, because the mean of its divisors is an integer number (6244875).

Almost surely, 2^551356416 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 551356416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899262000).

551356416 is an abundant number, since it is smaller than the sum of its proper divisors (1247167584).

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

551356416 is a wasteful number, since it uses less digits than its factorization.

551356416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 77 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 551356416 is about 23480.9798773390. The cubic root of 551356416 is about 819.9942573463.

The spelling of 551356416 in words is "five hundred fifty-one million, three hundred fifty-six thousand, four hundred sixteen".