551263541 has 2 divisors, whose sum is σ = 551263542. Its totient is φ = 551263540.

The previous prime is 551263529. The next prime is 551263543. The reversal of 551263541 is 145362155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 551263441 + 100 = 23479^2 + 10^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551263541 is a prime.

Together with 551263543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 551263498 and 551263507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551263543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275631770 + 275631771.

It is an arithmetic number, because the mean of its divisors is an integer number (275631771).

Almost surely, 2^551263541 is an apocalyptic number.

It is an amenable number.

551263541 is a deficient number, since it is larger than the sum of its proper divisors (1).

551263541 is an equidigital number, since it uses as much as digits as its factorization.

551263541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 32.

The square root of 551263541 is about 23479.0021295625. The cubic root of 551263541 is about 819.9482125732.

The spelling of 551263541 in words is "five hundred fifty-one million, two hundred sixty-three thousand, five hundred forty-one".