145073177 has 4 divisors (see below), whose sum is σ = 145108260. Its totient is φ = 145038096.

The previous prime is 145073171. The next prime is 145073183. The reversal of 145073177 is 771370541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 771370541 = 1093 ⋅705737.

It is an interprime number because it is at equal distance from previous prime (145073171) and next prime (145073183).

It can be written as a sum of positive squares in 2 ways, for example, as 31629376 + 113443801 = 5624^2 + 10651^2 .

It is a cyclic number.

It is not a de Polignac number, because 145073177 - 2¹⁶ = 145007641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145073171) 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 in 3 ways as a sum of consecutive naturals, for example, 10358 + ... + 19935.

It is an arithmetic number, because the mean of its divisors is an integer number (36277065).

Almost surely, 2^145073177 is an apocalyptic number.

It is an amenable number.

145073177 is a deficient number, since it is larger than the sum of its proper divisors (35083).

145073177 is an equidigital number, since it uses as much as digits as its factorization.

145073177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35082.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 145073177 is about 12044.6327050683. The cubic root of 145073177 is about 525.4471498116.

The spelling of 145073177 in words is "one hundred forty-five million, seventy-three thousand, one hundred seventy-seven".