145212523 has 2 divisors, whose sum is σ = 145212524. Its totient is φ = 145212522.

The previous prime is 145212503. The next prime is 145212553. The reversal of 145212523 is 325212541.

145212523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145212523 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (145212503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72606261 + 72606262.

It is an arithmetic number, because the mean of its divisors is an integer number (72606262).

Almost surely, 2^145212523 is an apocalyptic number.

145212523 is a deficient number, since it is larger than the sum of its proper divisors (1).

145212523 is an equidigital number, since it uses as much as digits as its factorization.

145212523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 145212523 is about 12050.4158849394. The cubic root of 145212523 is about 525.6153305181.

The spelling of 145212523 in words is "one hundred forty-five million, two hundred twelve thousand, five hundred twenty-three".