551433139 has 2 divisors, whose sum is σ = 551433140. Its totient is φ = 551433138.

The previous prime is 551433137. The next prime is 551433151. The reversal of 551433139 is 931334155.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551433139 - 2¹ = 551433137 is a prime.

Together with 551433137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (551433137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275716569 + 275716570.

It is an arithmetic number, because the mean of its divisors is an integer number (275716570).

Almost surely, 2^551433139 is an apocalyptic number.

551433139 is a deficient number, since it is larger than the sum of its proper divisors (1).

551433139 is an equidigital number, since it uses as much as digits as its factorization.

551433139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 551433139 is about 23482.6135470480. The cubic root of 551433139 is about 820.0322905190.

The spelling of 551433139 in words is "five hundred fifty-one million, four hundred thirty-three thousand, one hundred thirty-nine".