145860481 has 4 divisors (see below), whose sum is σ = 157080532. Its totient is φ = 134640432.

The previous prime is 145860469. The next prime is 145860523. The reversal of 145860481 is 184068541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184068541 = 461 ⋅399281.

It can be written as a sum of positive squares in 2 ways, for example, as 12250000 + 133610481 = 3500^2 + 11559^2 .

It is a cyclic number.

It is not a de Polignac number, because 145860481 - 2⁹ = 145859969 is a prime.

It is a super-2 number, since 2×145860481² = 42550559835102722, 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 145860481.

It is not an unprimeable number, because it can be changed into a prime (145860431) 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, 5610006 + ... + 5610031.

It is an arithmetic number, because the mean of its divisors is an integer number (39270133).

Almost surely, 2^145860481 is an apocalyptic number.

It is an amenable number.

145860481 is a deficient number, since it is larger than the sum of its proper divisors (11220051).

145860481 is a wasteful number, since it uses less digits than its factorization.

145860481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220050.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 145860481 is about 12077.2712563724. The cubic root of 145860481 is about 526.3959595734.

The spelling of 145860481 in words is "one hundred forty-five million, eight hundred sixty thousand, four hundred eighty-one".