145790641 has 4 divisors (see below), whose sum is σ = 145947172. Its totient is φ = 145634112.

The previous prime is 145790611. The next prime is 145790653. The reversal of 145790641 is 146097541.

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 15374241 + 130416400 = 3921^2 + 11420^2 .

It is a cyclic number.

It is not a de Polignac number, because 145790641 - 2⁵ = 145790609 is a prime.

It is a super-2 number, since 2×145790641² = 42509822006381762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145790641.

It is not an unprimeable number, because it can be changed into a prime (145790611) 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, 76860 + ... + 78733.

It is an arithmetic number, because the mean of its divisors is an integer number (36486793).

Almost surely, 2^145790641 is an apocalyptic number.

It is an amenable number.

145790641 is a deficient number, since it is larger than the sum of its proper divisors (156531).

145790641 is an equidigital number, since it uses as much as digits as its factorization.

145790641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156530.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 145790641 is about 12074.3795285721. The cubic root of 145790641 is about 526.3119309575.

The spelling of 145790641 in words is "one hundred forty-five million, seven hundred ninety thousand, six hundred forty-one".