551145340 has 24 divisors (see below), whose sum is σ = 1188688032. Its totient is φ = 214499520.

The previous prime is 551145313. The next prime is 551145341. The reversal of 551145340 is 43541155.

It is a super-2 number, since 2×551145340² = 607522371607431200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551145299 and 551145308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551145341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371656 + ... + 373135.

It is an arithmetic number, because the mean of its divisors is an integer number (49528668).

Almost surely, 2^551145340 is an apocalyptic number.

It is an amenable number.

551145340 is an abundant number, since it is smaller than the sum of its proper divisors (637542692).

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

551145340 is a wasteful number, since it uses less digits than its factorization.

551145340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744837 (or 744835 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 551145340 is about 23476.4848305704. The cubic root of 551145340 is about 819.8896044125.

Adding to 551145340 its reverse (43541155), we get a palindrome (594686495).

The spelling of 551145340 in words is "five hundred fifty-one million, one hundred forty-five thousand, three hundred forty".