145913517 has 6 divisors (see below), whose sum is σ = 210763982. Its totient is φ = 97275672.

The previous prime is 145913507. The next prime is 145913519. The reversal of 145913517 is 715319541.

It is a happy number.

145913517 is a `hidden beast` number, since 14 + 591 + 3 + 51 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 142420356 + 3493161 = 11934^2 + 1869^2 .

It is not a de Polignac number, because 145913517 - 2⁴ = 145913501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145913519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8106298 + ... + 8106315.

Almost surely, 2^145913517 is an apocalyptic number.

It is an amenable number.

145913517 is a deficient number, since it is larger than the sum of its proper divisors (64850465).

145913517 is a wasteful number, since it uses less digits than its factorization.

145913517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16212619 (or 16212616 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 145913517 is about 12079.4667514754. The cubic root of 145913517 is about 526.4597523908.

The spelling of 145913517 in words is "one hundred forty-five million, nine hundred thirteen thousand, five hundred seventeen".