551455242 has 64 divisors (see below), whose sum is σ = 1238751360. Its totient is φ = 162489600.

The previous prime is 551455159. The next prime is 551455309. The reversal of 551455242 is 242554155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295392 + ... + 297252.

It is an arithmetic number, because the mean of its divisors is an integer number (19355490).

Almost surely, 2^551455242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551455242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619375680).

551455242 is an abundant number, since it is smaller than the sum of its proper divisors (687296118).

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

551455242 is a wasteful number, since it uses less digits than its factorization.

551455242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its digits is 40000, while the sum is 33.

The square root of 551455242 is about 23483.0841671191. The cubic root of 551455242 is about 820.0432467772.

The spelling of 551455242 in words is "five hundred fifty-one million, four hundred fifty-five thousand, two hundred forty-two".