145295881 has 2 divisors, whose sum is σ = 145295882. Its totient is φ = 145295880.

The previous prime is 145295867. The next prime is 145295893. The reversal of 145295881 is 188592541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135932281 + 9363600 = 11659^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 145295881 - 2⁵ = 145295849 is a prime.

It is a super-2 number, since 2×145295881² = 42221786071132322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145295851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72647940 + 72647941.

It is an arithmetic number, because the mean of its divisors is an integer number (72647941).

Almost surely, 2^145295881 is an apocalyptic number.

It is an amenable number.

145295881 is a deficient number, since it is larger than the sum of its proper divisors (1).

145295881 is an equidigital number, since it uses as much as digits as its factorization.

145295881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 43.

The square root of 145295881 is about 12053.8741075224. The cubic root of 145295881 is about 525.7158862663.

The spelling of 145295881 in words is "one hundred forty-five million, two hundred ninety-five thousand, eight hundred eighty-one".