145424402257 has 2 divisors, whose sum is σ = 145424402258. Its totient is φ = 145424402256.

The previous prime is 145424402141. The next prime is 145424402311. The reversal of 145424402257 is 752204424541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79383626001 + 66040776256 = 281751^2 + 256984^2 .

It is an emirp because it is prime and its reverse (752204424541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145424402257 - 2⁷ = 145424402129 is a prime.

It is a super-2 number, since 2×145424402257² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145424462257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72712201128 + 72712201129.

It is an arithmetic number, because the mean of its divisors is an integer number (72712201129).

Almost surely, 2^145424402257 is an apocalyptic number.

It is an amenable number.

145424402257 is a deficient number, since it is larger than the sum of its proper divisors (1).

145424402257 is an equidigital number, since it uses as much as digits as its factorization.

145424402257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 358400, while the sum is 40.

Adding to 145424402257 its reverse (752204424541), we get a palindrome (897628826798).

The spelling of 145424402257 in words is "one hundred forty-five billion, four hundred twenty-four million, four hundred two thousand, two hundred fifty-seven".