55260157 has 2 divisors, whose sum is σ = 55260158. Its totient is φ = 55260156.

The previous prime is 55260143. The next prime is 55260187. The reversal of 55260157 is 75106255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51998521 + 3261636 = 7211^2 + 1806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55260157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55260187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27630078 + 27630079.

It is an arithmetic number, because the mean of its divisors is an integer number (27630079).

Almost surely, 2^55260157 is an apocalyptic number.

It is an amenable number.

55260157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55260157 is an equidigital number, since it uses as much as digits as its factorization.

55260157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55260157 is about 7433.7175760181. The cubic root of 55260157 is about 380.8939181061.

The spelling of 55260157 in words is "fifty-five million, two hundred sixty thousand, one hundred fifty-seven".