145112521 has 2 divisors, whose sum is σ = 145112522. Its totient is φ = 145112520.

The previous prime is 145112503. The next prime is 145112533. The reversal of 145112521 is 125211541.

145112521 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., 108388921 + 36723600 = 10411^2 + 6060^2 .

It is a cyclic number.

It is not a de Polignac number, because 145112521 - 2¹³ = 145104329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145112492 and 145112501.

It is not a weakly prime, because it can be changed into another prime (145112501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72556260 + 72556261.

It is an arithmetic number, because the mean of its divisors is an integer number (72556261).

Almost surely, 2^145112521 is an apocalyptic number.

It is an amenable number.

145112521 is a deficient number, since it is larger than the sum of its proper divisors (1).

145112521 is an equidigital number, since it uses as much as digits as its factorization.

145112521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 22.

The square root of 145112521 is about 12046.2658529521. The cubic root of 145112521 is about 525.4946461269.

The spelling of 145112521 in words is "one hundred forty-five million, one hundred twelve thousand, five hundred twenty-one".