55170943 has 2 divisors, whose sum is σ = 55170944. Its totient is φ = 55170942.

The previous prime is 55170931. The next prime is 55171031. The reversal of 55170943 is 34907155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55170943 - 2⁹ = 55170431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55170899 and 55170908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55176943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27585471 + 27585472.

It is an arithmetic number, because the mean of its divisors is an integer number (27585472).

Almost surely, 2^55170943 is an apocalyptic number.

55170943 is a deficient number, since it is larger than the sum of its proper divisors (1).

55170943 is an equidigital number, since it uses as much as digits as its factorization.

55170943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 55170943 is about 7427.7145206315. The cubic root of 55170943 is about 380.6888313852.

The spelling of 55170943 in words is "fifty-five million, one hundred seventy thousand, nine hundred forty-three".