145345457 has 2 divisors, whose sum is σ = 145345458. Its totient is φ = 145345456.

The previous prime is 145345439. The next prime is 145345469. The reversal of 145345457 is 754543541.

145345457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142659136 + 2686321 = 11944^2 + 1639^2 .

It is a cyclic number.

It is not a de Polignac number, because 145345457 - 2¹⁶ = 145279921 is a prime.

It is a super-2 number, since 2×145345457² = 42250603741077698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145345457.

It is not a weakly prime, because it can be changed into another prime (145345357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72672728 + 72672729.

It is an arithmetic number, because the mean of its divisors is an integer number (72672729).

Almost surely, 2^145345457 is an apocalyptic number.

It is an amenable number.

145345457 is a deficient number, since it is larger than the sum of its proper divisors (1).

145345457 is an equidigital number, since it uses as much as digits as its factorization.

145345457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 38.

The square root of 145345457 is about 12055.9303664213. The cubic root of 145345457 is about 525.7756721479.

Adding to 145345457 its reverse (754543541), we get a palindrome (899888998).

It can be divided in two parts, 14534 and 5457, that added together give a palindrome (19991).

The spelling of 145345457 in words is "one hundred forty-five million, three hundred forty-five thousand, four hundred fifty-seven".