145113517 has 2 divisors, whose sum is σ = 145113518. Its totient is φ = 145113516.

The previous prime is 145113503. The next prime is 145113557. The reversal of 145113517 is 715311541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90516196 + 54597321 = 9514^2 + 7389^2 .

It is a cyclic number.

It is not a de Polignac number, because 145113517 - 2⁷ = 145113389 is a prime.

It is a super-2 number, since 2×145113517² = 42115865632218578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145113557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72556758 + 72556759.

It is an arithmetic number, because the mean of its divisors is an integer number (72556759).

Almost surely, 2^145113517 is an apocalyptic number.

It is an amenable number.

145113517 is a deficient number, since it is larger than the sum of its proper divisors (1).

145113517 is an equidigital number, since it uses as much as digits as its factorization.

145113517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 28.

The square root of 145113517 is about 12046.3071934930. The cubic root of 145113517 is about 525.4958483927.

The spelling of 145113517 in words is "one hundred forty-five million, one hundred thirteen thousand, five hundred seventeen".