551234240 has 28 divisors (see below), whose sum is σ = 1312627296. Its totient is φ = 220493568.

The previous prime is 551234237. The next prime is 551234263. The reversal of 551234240 is 42432155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860984 + ... + 861623.

Almost surely, 2^551234240 is an apocalyptic number.

It is an amenable number.

551234240 is an abundant number, since it is smaller than the sum of its proper divisors (761393056).

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

551234240 is a wasteful number, since it uses less digits than its factorization.

551234240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722624 (or 1722614 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 551234240 is about 23478.3781381934. The cubic root of 551234240 is about 819.9336849008.

Adding to 551234240 its reverse (42432155), we get a palindrome (593666395).

The spelling of 551234240 in words is "five hundred fifty-one million, two hundred thirty-four thousand, two hundred forty".