551342121 has 16 divisors (see below), whose sum is σ = 806880000. Its totient is φ = 332093520.

The previous prime is 551342119. The next prime is 551342137. The reversal of 551342121 is 121243155.

It is a happy number.

It is not a de Polignac number, because 551342121 - 2¹ = 551342119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551342091 and 551342100.

It is not an unprimeable number, because it can be changed into a prime (551342111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45871 + ... + 56628.

It is an arithmetic number, because the mean of its divisors is an integer number (50430000).

Almost surely, 2^551342121 is an apocalyptic number.

It is an amenable number.

551342121 is a deficient number, since it is larger than the sum of its proper divisors (255537879).

551342121 is a wasteful number, since it uses less digits than its factorization.

551342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102676.

The product of its digits is 1200, while the sum is 24.

The square root of 551342121 is about 23480.6754800623. The cubic root of 551342121 is about 819.9871706301.

Adding to 551342121 its reverse (121243155), we get a palindrome (672585276).

The spelling of 551342121 in words is "five hundred fifty-one million, three hundred forty-two thousand, one hundred twenty-one".