551326745 has 12 divisors (see below), whose sum is σ = 702800364. Its totient is φ = 415115520.

The previous prime is 551326709. The next prime is 551326747. The reversal of 551326745 is 547623155.

It is a happy number.

551326745 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2408704 + 548918041 = 1552^2 + 23429^2 .

It is not a de Polignac number, because 551326745 - 2²⁸ = 282891289 is a prime.

It is a super-2 number, since 2×551326745² = 607922359504590050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551326699 and 551326708.

It is not an unprimeable number, because it can be changed into a prime (551326747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189326 + ... + 192215.

It is an arithmetic number, because the mean of its divisors is an integer number (58566697).

Almost surely, 2^551326745 is an apocalyptic number.

It is an amenable number.

551326745 is a deficient number, since it is larger than the sum of its proper divisors (151473619).

551326745 is a wasteful number, since it uses less digits than its factorization.

551326745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381580 (or 381563 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 551326745 is about 23480.3480596008. The cubic root of 551326745 is about 819.9795478738.

The spelling of 551326745 in words is "five hundred fifty-one million, three hundred twenty-six thousand, seven hundred forty-five".