145902971 has 2 divisors, whose sum is σ = 145902972. Its totient is φ = 145902970.

The previous prime is 145902949. The next prime is 145902989. The reversal of 145902971 is 179209541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145902971 is a prime.

It is not a weakly prime, because it can be changed into another prime (145902901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951485 + 72951486.

It is an arithmetic number, because the mean of its divisors is an integer number (72951486).

Almost surely, 2^145902971 is an apocalyptic number.

145902971 is a deficient number, since it is larger than the sum of its proper divisors (1).

145902971 is an equidigital number, since it uses as much as digits as its factorization.

145902971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 145902971 is about 12079.0302176955. The cubic root of 145902971 is about 526.4470686714.

The spelling of 145902971 in words is "one hundred forty-five million, nine hundred two thousand, nine hundred seventy-one".