551360240 has 80 divisors (see below), whose sum is σ = 1368141600. Its totient is φ = 206032896.

The previous prime is 551360237. The next prime is 551360261. The reversal of 551360240 is 42063155.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×551360240² = 607996228505715200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108476 + ... + 113444.

It is an arithmetic number, because the mean of its divisors is an integer number (17101770).

Almost surely, 2^551360240 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 551360240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684070800).

551360240 is an abundant number, since it is smaller than the sum of its proper divisors (816781360).

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

551360240 is a wasteful number, since it uses less digits than its factorization.

551360240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074 (or 5068 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 551360240 is about 23481.0613048048. The cubic root of 551360240 is about 819.9961530654.

The spelling of 551360240 in words is "five hundred fifty-one million, three hundred sixty thousand, two hundred forty".