551145012 has 24 divisors (see below), whose sum is σ = 1402914912. Its totient is φ = 167013600.

The previous prime is 551145011. The next prime is 551145031. The reversal of 551145012 is 210541155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551145011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2087539 + ... + 2087802.

It is an arithmetic number, because the mean of its divisors is an integer number (58454788).

Almost surely, 2^551145012 is an apocalyptic number.

It is an amenable number.

551145012 is an abundant number, since it is smaller than the sum of its proper divisors (851769900).

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

551145012 is a wasteful number, since it uses less digits than its factorization.

551145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175359 (or 4175357 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 551145012 is about 23476.4778448557. The cubic root of 551145012 is about 819.8894417670.

Adding to 551145012 its reverse (210541155), we get a palindrome (761686167).

The spelling of 551145012 in words is "five hundred fifty-one million, one hundred forty-five thousand, twelve".