545271157 has 2 divisors, whose sum is σ = 545271158. Its totient is φ = 545271156.

The previous prime is 545271061. The next prime is 545271161. The reversal of 545271157 is 751172545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532640241 + 12630916 = 23079^2 + 3554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545271157 is a prime.

It is a super-2 number, since 2×545271157² = 594641269312237298, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545271187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272635578 + 272635579.

It is an arithmetic number, because the mean of its divisors is an integer number (272635579).

Almost surely, 2^545271157 is an apocalyptic number.

It is an amenable number.

545271157 is a deficient number, since it is larger than the sum of its proper divisors (1).

545271157 is an equidigital number, since it uses as much as digits as its factorization.

545271157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49000, while the sum is 37.

The square root of 545271157 is about 23351.0418825371. The cubic root of 545271157 is about 816.9663621057.

The spelling of 545271157 in words is "five hundred forty-five million, two hundred seventy-one thousand, one hundred fifty-seven".