145166377 has 4 divisors (see below), whose sum is σ = 145349316. Its totient is φ = 144983440.

The previous prime is 145166347. The next prime is 145166381. The reversal of 145166377 is 773661541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 773661541 = 2719 ⋅284539.

It can be written as a sum of positive squares in 2 ways, for example, as 103550976 + 41615401 = 10176^2 + 6451^2 .

It is a cyclic number.

It is not a de Polignac number, because 145166377 - 2⁷ = 145166249 is a prime.

It is a super-2 number, since 2×145166377² = 42146554022612258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145166347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90274 + ... + 91867.

It is an arithmetic number, because the mean of its divisors is an integer number (36337329).

Almost surely, 2^145166377 is an apocalyptic number.

It is an amenable number.

145166377 is a deficient number, since it is larger than the sum of its proper divisors (182939).

145166377 is an equidigital number, since it uses as much as digits as its factorization.

145166377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182938.

The product of its digits is 105840, while the sum is 40.

The square root of 145166377 is about 12048.5010270988. The cubic root of 145166377 is about 525.5596474997.

The spelling of 145166377 in words is "one hundred forty-five million, one hundred sixty-six thousand, three hundred seventy-seven".