55533161 has 2 divisors, whose sum is σ = 55533162. Its totient is φ = 55533160.

The previous prime is 55533131. The next prime is 55533193. The reversal of 55533161 is 16133555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42823936 + 12709225 = 6544^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 55533161 - 2¹⁰ = 55532137 is a prime.

It is not a weakly prime, because it can be changed into another prime (55533131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766580 + 27766581.

It is an arithmetic number, because the mean of its divisors is an integer number (27766581).

Almost surely, 2^55533161 is an apocalyptic number.

It is an amenable number.

55533161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533161 is an equidigital number, since it uses as much as digits as its factorization.

55533161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6750, while the sum is 29.

The square root of 55533161 is about 7452.0575011201. The cubic root of 55533161 is about 381.5201365604.

The spelling of 55533161 in words is "fifty-five million, five hundred thirty-three thousand, one hundred sixty-one".