145031417 has 2 divisors, whose sum is σ = 145031418. Its totient is φ = 145031416.

The previous prime is 145031413. The next prime is 145031431. The reversal of 145031417 is 714130541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110586256 + 34445161 = 10516^2 + 5869^2 .

It is a cyclic number.

It is not a de Polignac number, because 145031417 - 2² = 145031413 is a prime.

It is a super-2 number, since 2×145031417² = 42068223834055778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145031413) 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, 72515708 + 72515709.

It is an arithmetic number, because the mean of its divisors is an integer number (72515709).

Almost surely, 2^145031417 is an apocalyptic number.

It is an amenable number.

145031417 is a deficient number, since it is larger than the sum of its proper divisors (1).

145031417 is an equidigital number, since it uses as much as digits as its factorization.

145031417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 145031417 is about 12042.8990280580. The cubic root of 145031417 is about 525.3967274909.

Adding to 145031417 its reverse (714130541), we get a palindrome (859161958).

The spelling of 145031417 in words is "one hundred forty-five million, thirty-one thousand, four hundred seventeen".