551205241 has 4 divisors (see below), whose sum is σ = 557846352. Its totient is φ = 544564132.

The previous prime is 551205227. The next prime is 551205251. The reversal of 551205241 is 142502155.

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.

It is a cyclic number.

It is not a de Polignac number, because 551205241 - 2⁵ = 551205209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551205251) 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, 3320431 + ... + 3320596.

It is an arithmetic number, because the mean of its divisors is an integer number (139461588).

Almost surely, 2^551205241 is an apocalyptic number.

It is an amenable number.

551205241 is a deficient number, since it is larger than the sum of its proper divisors (6641111).

551205241 is an equidigital number, since it uses as much as digits as its factorization.

551205241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641110.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 551205241 is about 23477.7605618594. The cubic root of 551205241 is about 819.9193064557.

Adding to 551205241 its reverse (142502155), we get a palindrome (693707396).

The spelling of 551205241 in words is "five hundred fifty-one million, two hundred five thousand, two hundred forty-one".