145131953 has 2 divisors, whose sum is σ = 145131954. Its totient is φ = 145131952.

The previous prime is 145131929. The next prime is 145131971. The reversal of 145131953 is 359131541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139901584 + 5230369 = 11828^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 145131953 - 2¹⁴ = 145115569 is a prime.

It is not a weakly prime, because it can be changed into another prime (145131653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72565976 + 72565977.

It is an arithmetic number, because the mean of its divisors is an integer number (72565977).

Almost surely, 2^145131953 is an apocalyptic number.

It is an amenable number.

145131953 is a deficient number, since it is larger than the sum of its proper divisors (1).

145131953 is an equidigital number, since it uses as much as digits as its factorization.

145131953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 145131953 is about 12047.0723829485. The cubic root of 145131953 is about 525.5181013880.

The spelling of 145131953 in words is "one hundred forty-five million, one hundred thirty-one thousand, nine hundred fifty-three".