145902901 has 2 divisors, whose sum is σ = 145902902. Its totient is φ = 145902900.

The previous prime is 145902893. The next prime is 145902937. The reversal of 145902901 is 109209541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129982801 + 15920100 = 11401^2 + 3990^2 .

It is a cyclic number.

It is not a de Polignac number, because 145902901 - 2³ = 145902893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145902971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951450 + 72951451.

It is an arithmetic number, because the mean of its divisors is an integer number (72951451).

Almost surely, 2^145902901 is an apocalyptic number.

It is an amenable number.

145902901 is a deficient number, since it is larger than the sum of its proper divisors (1).

145902901 is an equidigital number, since it uses as much as digits as its factorization.

145902901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 145902901 is about 12079.0273201115. The cubic root of 145902901 is about 526.4469844800.

The spelling of 145902901 in words is "one hundred forty-five million, nine hundred two thousand, nine hundred one".