145180481 has 2 divisors, whose sum is σ = 145180482. Its totient is φ = 145180480.

The previous prime is 145180423. The next prime is 145180487. The reversal of 145180481 is 184081541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 3094081 = 11920^2 + 1759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145180481 is a prime.

It is a super-2 number, since 2×145180481² = 42154744126782722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145180487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72590240 + 72590241.

It is an arithmetic number, because the mean of its divisors is an integer number (72590241).

Almost surely, 2^145180481 is an apocalyptic number.

It is an amenable number.

145180481 is a deficient number, since it is larger than the sum of its proper divisors (1).

145180481 is an equidigital number, since it uses as much as digits as its factorization.

145180481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 145180481 is about 12049.0863139078. The cubic root of 145180481 is about 525.5766676329.

The spelling of 145180481 in words is "one hundred forty-five million, one hundred eighty thousand, four hundred eighty-one".