551744240 has 40 divisors (see below), whose sum is σ = 1338583968. Its totient is φ = 211101440.

The previous prime is 551744239. The next prime is 551744267. The reversal of 551744240 is 42447155.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 551744197 and 551744206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148091 + ... + 151770.

Almost surely, 2^551744240 is an apocalyptic number.

It is an amenable number.

551744240 is an abundant number, since it is smaller than the sum of its proper divisors (786839728).

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

551744240 is a wasteful number, since it uses less digits than its factorization.

551744240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299897 (or 299891 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 551744240 is about 23489.2366840645. The cubic root of 551744240 is about 820.1864735542.

The spelling of 551744240 in words is "five hundred fifty-one million, seven hundred forty-four thousand, two hundred forty".