145598137 has 4 divisors (see below), whose sum is σ = 145657636. Its totient is φ = 145538640.

The previous prime is 145598111. The next prime is 145598147. The reversal of 145598137 is 731895541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68492176 + 77105961 = 8276^2 + 8781^2 .

It is a cyclic number.

It is not a de Polignac number, because 145598137 - 2¹¹ = 145596089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145598093 and 145598102.

It is not an unprimeable number, because it can be changed into a prime (145598147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25914 + ... + 31027.

It is an arithmetic number, because the mean of its divisors is an integer number (36414409).

Almost surely, 2^145598137 is an apocalyptic number.

It is an amenable number.

145598137 is a deficient number, since it is larger than the sum of its proper divisors (59499).

145598137 is an equidigital number, since it uses as much as digits as its factorization.

145598137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59498.

The product of its digits is 151200, while the sum is 43.

The square root of 145598137 is about 12066.4053056409. The cubic root of 145598137 is about 526.0801790482.

The spelling of 145598137 in words is "one hundred forty-five million, five hundred ninety-eight thousand, one hundred thirty-seven".