145512457 has 2 divisors, whose sum is σ = 145512458. Its totient is φ = 145512456.

The previous prime is 145512449. The next prime is 145512533. The reversal of 145512457 is 754215541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144504441 + 1008016 = 12021^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 145512457 - 2³ = 145512449 is a prime.

It is not a weakly prime, because it can be changed into another prime (145512407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72756228 + 72756229.

It is an arithmetic number, because the mean of its divisors is an integer number (72756229).

Almost surely, 2^145512457 is an apocalyptic number.

It is an amenable number.

145512457 is a deficient number, since it is larger than the sum of its proper divisors (1).

145512457 is an equidigital number, since it uses as much as digits as its factorization.

145512457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28000, while the sum is 34.

The square root of 145512457 is about 12062.8544300261. The cubic root of 145512457 is about 525.9769648285.

Adding to 145512457 its reverse (754215541), we get a palindrome (899727998).

The spelling of 145512457 in words is "one hundred forty-five million, five hundred twelve thousand, four hundred fifty-seven".