551242101 has 8 divisors (see below), whose sum is σ = 735963424. Its totient is φ = 367007760.

The previous prime is 551242099. The next prime is 551242129. The reversal of 551242101 is 101242155.

551242101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551242101 - 2¹ = 551242099 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551242151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119095 + ... + 123636.

It is an arithmetic number, because the mean of its divisors is an integer number (91995428).

Almost surely, 2^551242101 is an apocalyptic number.

It is an amenable number.

551242101 is a deficient number, since it is larger than the sum of its proper divisors (184721323).

551242101 is a wasteful number, since it uses less digits than its factorization.

551242101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243491.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 551242101 is about 23478.5455469456. The cubic root of 551242101 is about 819.9375824986.

Adding to 551242101 its reverse (101242155), we get a palindrome (652484256).

The spelling of 551242101 in words is "five hundred fifty-one million, two hundred forty-two thousand, one hundred one".