553552121 has 2 divisors, whose sum is σ = 553552122. Its totient is φ = 553552120.

The previous prime is 553552093. The next prime is 553552141. The reversal of 553552121 is 121255355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541027600 + 12524521 = 23260^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 553552121 - 2¹⁴ = 553535737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (553552141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276776060 + 276776061.

It is an arithmetic number, because the mean of its divisors is an integer number (276776061).

Almost surely, 2^553552121 is an apocalyptic number.

It is an amenable number.

553552121 is a deficient number, since it is larger than the sum of its proper divisors (1).

553552121 is an equidigital number, since it uses as much as digits as its factorization.

553552121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7500, while the sum is 29.

The square root of 553552121 is about 23527.6883904900. The cubic root of 553552121 is about 821.0813223087.

The spelling of 553552121 in words is "five hundred fifty-three million, five hundred fifty-two thousand, one hundred twenty-one".