551505262069 has 2 divisors, whose sum is σ = 551505262070. Its totient is φ = 551505262068.

The previous prime is 551505262031. The next prime is 551505262127. The reversal of 551505262069 is 960262505155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316777608900 + 234727653169 = 562830^2 + 484487^2 .

It is a cyclic number.

It is not a de Polignac number, because 551505262069 - 2³¹ = 549357778421 is a prime.

It is a super-2 number, since 2×551505262069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551505262169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275752631034 + 275752631035.

It is an arithmetic number, because the mean of its divisors is an integer number (275752631035).

Almost surely, 2^551505262069 is an apocalyptic number.

It is an amenable number.

551505262069 is a deficient number, since it is larger than the sum of its proper divisors (1).

551505262069 is an equidigital number, since it uses as much as digits as its factorization.

551505262069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 551505262069 in words is "five hundred fifty-one billion, five hundred five million, two hundred sixty-two thousand, sixty-nine".