551247376121 has 32 divisors (see below), whose sum is σ = 620478528768. Its totient is φ = 486384756480.

The previous prime is 551247376081. The next prime is 551247376123. The reversal of 551247376121 is 121673742155.

It is a cyclic number.

It is not a de Polignac number, because 551247376121 - 2¹⁰ = 551247375097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551247376123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9636215 + ... + 9693251.

It is an arithmetic number, because the mean of its divisors is an integer number (19389954024).

Almost surely, 2^551247376121 is an apocalyptic number.

It is an amenable number.

551247376121 is a deficient number, since it is larger than the sum of its proper divisors (69231152647).

551247376121 is a wasteful number, since it uses less digits than its factorization.

551247376121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57441.

The product of its digits is 352800, while the sum is 44.

The spelling of 551247376121 in words is "five hundred fifty-one billion, two hundred forty-seven million, three hundred seventy-six thousand, one hundred twenty-one".