551601269 has 2 divisors, whose sum is σ = 551601270. Its totient is φ = 551601268.

The previous prime is 551601247. The next prime is 551601283. The reversal of 551601269 is 962106155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317908900 + 233692369 = 17830^2 + 15287^2 .

It is a cyclic number.

It is not a de Polignac number, because 551601269 - 2⁸ = 551601013 is a prime.

It is a super-2 number, since 2×551601269² = 608527919924820722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_28925072 and since 551601269 and 28925072 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551601289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275800634 + 275800635.

It is an arithmetic number, because the mean of its divisors is an integer number (275800635).

Almost surely, 2^551601269 is an apocalyptic number.

It is an amenable number.

551601269 is a deficient number, since it is larger than the sum of its proper divisors (1).

551601269 is an equidigital number, since it uses as much as digits as its factorization.

551601269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 551601269 is about 23486.1931568315. The cubic root of 551601269 is about 820.1156236918.

The spelling of 551601269 in words is "five hundred fifty-one million, six hundred one thousand, two hundred sixty-nine".