551420537 has 2 divisors, whose sum is σ = 551420538. Its totient is φ = 551420536.

The previous prime is 551420503. The next prime is 551420579. The reversal of 551420537 is 735024155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369062521 + 182358016 = 19211^2 + 13504^2 .

It is a cyclic number.

It is not a de Polignac number, because 551420537 - 2¹⁰ = 551419513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275710268 + 275710269.

It is an arithmetic number, because the mean of its divisors is an integer number (275710269).

Almost surely, 2^551420537 is an apocalyptic number.

It is an amenable number.

551420537 is a deficient number, since it is larger than the sum of its proper divisors (1).

551420537 is an equidigital number, since it uses as much as digits as its factorization.

551420537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 551420537 is about 23482.3452193345. The cubic root of 551420537 is about 820.0260436900.

The spelling of 551420537 in words is "five hundred fifty-one million, four hundred twenty thousand, five hundred thirty-seven".