55136269 has 2 divisors, whose sum is σ = 55136270. Its totient is φ = 55136268.

The previous prime is 55136261. The next prime is 55136303. The reversal of 55136269 is 96263155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49519369 + 5616900 = 7037^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 55136269 - 2³ = 55136261 is a prime.

It is a super-2 number, since 2×55136269² = 6080016318480722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55136261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27568134 + 27568135.

It is an arithmetic number, because the mean of its divisors is an integer number (27568135).

Almost surely, 2^55136269 is an apocalyptic number.

It is an amenable number.

55136269 is a deficient number, since it is larger than the sum of its proper divisors (1).

55136269 is an equidigital number, since it uses as much as digits as its factorization.

55136269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 55136269 is about 7425.3800576132. The cubic root of 55136269 is about 380.6090625183.

The spelling of 55136269 in words is "fifty-five million, one hundred thirty-six thousand, two hundred sixty-nine".