551242431 has 6 divisors (see below), whose sum is σ = 796239080. Its totient is φ = 367494948.

The previous prime is 551242423. The next prime is 551242463. The reversal of 551242431 is 134242155.

It is not a de Polignac number, because 551242431 - 2³ = 551242423 is a prime.

It is a super-2 number, since 2×551242431² = 607736435469579522, 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 = 551242395 and 551242404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551242481) 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 5 ways as a sum of consecutive naturals, for example, 30624571 + ... + 30624588.

Almost surely, 2^551242431 is an apocalyptic number.

551242431 is a deficient number, since it is larger than the sum of its proper divisors (244996649).

551242431 is a wasteful number, since it uses less digits than its factorization.

551242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61249165 (or 61249162 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 551242431 is about 23478.5525746371. The cubic root of 551242431 is about 819.9377461166.

Adding to 551242431 its reverse (134242155), we get a palindrome (685484586).

The spelling of 551242431 in words is "five hundred fifty-one million, two hundred forty-two thousand, four hundred thirty-one".