551412540 has 72 divisors (see below), whose sum is σ = 1911567840. Its totient is φ = 126036864.

The previous prime is 551412539. The next prime is 551412553. The reversal of 551412540 is 45214155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217555 + ... + 220074.

Almost surely, 2^551412540 is an apocalyptic number.

It is an amenable number.

551412540 is an abundant number, since it is smaller than the sum of its proper divisors (1360155300).

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

551412540 is a wasteful number, since it uses less digits than its factorization.

551412540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437651 (or 437646 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 551412540 is about 23482.1749418575. The cubic root of 551412540 is about 820.0220795165.

Adding to 551412540 its reverse (45214155), we get a palindrome (596626695).

The spelling of 551412540 in words is "five hundred fifty-one million, four hundred twelve thousand, five hundred forty".