551143251 has 16 divisors (see below), whose sum is σ = 828011520. Its totient is φ = 362252520.

The previous prime is 551143207. The next prime is 551143301. The reversal of 551143251 is 152341155.

551143251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551143251 - 2⁷ = 551143123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (551143951) 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, 141835 + ... + 145668.

It is an arithmetic number, because the mean of its divisors is an integer number (51750720).

Almost surely, 2^551143251 is an apocalyptic number.

551143251 is a deficient number, since it is larger than the sum of its proper divisors (276868269).

551143251 is a wasteful number, since it uses less digits than its factorization.

551143251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287583 (or 287577 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 551143251 is about 23476.4403391996. The cubic root of 551143251 is about 819.8885685384. Note that the first 3 decimals are identical.

The spelling of 551143251 in words is "five hundred fifty-one million, one hundred forty-three thousand, two hundred fifty-one".