145388077 has 2 divisors, whose sum is σ = 145388078. Its totient is φ = 145388076.

The previous prime is 145388053. The next prime is 145388081. The reversal of 145388077 is 770883541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145106116 + 281961 = 12046^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 145388077 - 2¹¹ = 145386029 is a prime.

It is a super-2 number, since 2×145388077² = 42275385867515858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145388027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72694038 + 72694039.

It is an arithmetic number, because the mean of its divisors is an integer number (72694039).

Almost surely, 2^145388077 is an apocalyptic number.

It is an amenable number.

145388077 is a deficient number, since it is larger than the sum of its proper divisors (1).

145388077 is an equidigital number, since it uses as much as digits as its factorization.

145388077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 145388077 is about 12057.6978316758. The cubic root of 145388077 is about 525.8270586163.

The spelling of 145388077 in words is "one hundred forty-five million, three hundred eighty-eight thousand, seventy-seven".