551404541 has 2 divisors, whose sum is σ = 551404542. Its totient is φ = 551404540.

The previous prime is 551404499. The next prime is 551404543. The reversal of 551404541 is 145404155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287472025 + 263932516 = 16955^2 + 16246^2 .

It is a cyclic number.

It is not a de Polignac number, because 551404541 - 2¹⁴ = 551388157 is a prime.

Together with 551404543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551404543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275702270 + 275702271.

It is an arithmetic number, because the mean of its divisors is an integer number (275702271).

Almost surely, 2^551404541 is an apocalyptic number.

It is an amenable number.

551404541 is a deficient number, since it is larger than the sum of its proper divisors (1).

551404541 is an equidigital number, since it uses as much as digits as its factorization.

551404541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 551404541 is about 23482.0046205600. The cubic root of 551404541 is about 820.0181143133.

Adding to 551404541 its reverse (145404155), we get a palindrome (696808696).

The spelling of 551404541 in words is "five hundred fifty-one million, four hundred four thousand, five hundred forty-one".