55452161 has 2 divisors, whose sum is σ = 55452162. Its totient is φ = 55452160.

The previous prime is 55452157. The next prime is 55452167. The reversal of 55452161 is 16125455.

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., 54538225 + 913936 = 7385^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 55452161 - 2² = 55452157 is a prime.

It is not a weakly prime, because it can be changed into another prime (55452167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27726080 + 27726081.

It is an arithmetic number, because the mean of its divisors is an integer number (27726081).

Almost surely, 2^55452161 is an apocalyptic number.

It is an amenable number.

55452161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55452161 is an equidigital number, since it uses as much as digits as its factorization.

55452161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 55452161 is about 7446.6207772385. The cubic root of 55452161 is about 381.3345527418.

The spelling of 55452161 in words is "fifty-five million, four hundred fifty-two thousand, one hundred sixty-one".