55269121 has 2 divisors, whose sum is σ = 55269122. Its totient is φ = 55269120.

The previous prime is 55269073. The next prime is 55269163. The reversal of 55269121 is 12196255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 26378496 = 5375^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 55269121 - 2¹⁵ = 55236353 is a prime.

It is a super-2 number, since 2×55269121² = 6109351472225282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55269821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27634560 + 27634561.

It is an arithmetic number, because the mean of its divisors is an integer number (27634561).

Almost surely, 2^55269121 is an apocalyptic number.

It is an amenable number.

55269121 is a deficient number, since it is larger than the sum of its proper divisors (1).

55269121 is an equidigital number, since it uses as much as digits as its factorization.

55269121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 55269121 is about 7434.3204800439. The cubic root of 55269121 is about 380.9145125010.

The spelling of 55269121 in words is "fifty-five million, two hundred sixty-nine thousand, one hundred twenty-one".