551444340 has 48 divisors (see below), whose sum is σ = 1545223680. Its totient is φ = 146939520.

The previous prime is 551444329. The next prime is 551444347. The reversal of 551444340 is 43444155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 551444298 and 551444307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551444347) 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 15 ways as a sum of consecutive naturals, for example, 101821 + ... + 107099.

It is an arithmetic number, because the mean of its divisors is an integer number (32192160).

Almost surely, 2^551444340 is an apocalyptic number.

It is an amenable number.

551444340 is an abundant number, since it is smaller than the sum of its proper divisors (993779340).

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

551444340 is a wasteful number, since it uses less digits than its factorization.

551444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032 (or 7030 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 551444340 is about 23482.8520414365. The cubic root of 551444340 is about 820.0378427905.

Adding to 551444340 its reverse (43444155), we get a palindrome (594888495).

The spelling of 551444340 in words is "five hundred fifty-one million, four hundred forty-four thousand, three hundred forty".