551314421 has 4 divisors (see below), whose sum is σ = 630073632. Its totient is φ = 472555212.

The previous prime is 551314381. The next prime is 551314483. The reversal of 551314421 is 124413155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124413155 = 5 ⋅24882631.

It is a cyclic number.

It is not a de Polignac number, because 551314421 - 2¹⁰ = 551313397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551314721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39379595 + ... + 39379608.

It is an arithmetic number, because the mean of its divisors is an integer number (157518408).

Almost surely, 2^551314421 is an apocalyptic number.

It is an amenable number.

551314421 is a deficient number, since it is larger than the sum of its proper divisors (78759211).

551314421 is an equidigital number, since it uses as much as digits as its factorization.

551314421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78759210.

The product of its digits is 2400, while the sum is 26.

The square root of 551314421 is about 23480.0856259086. The cubic root of 551314421 is about 819.9734380648.

Adding to 551314421 its reverse (124413155), we get a palindrome (675727576).

The spelling of 551314421 in words is "five hundred fifty-one million, three hundred fourteen thousand, four hundred twenty-one".