145161571 has 2 divisors, whose sum is σ = 145161572. Its totient is φ = 145161570.

The previous prime is 145161557. The next prime is 145161613. The reversal of 145161571 is 175161541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145161571 - 2⁹ = 145161059 is a prime.

It is not a weakly prime, because it can be changed into another prime (145162571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72580785 + 72580786.

It is an arithmetic number, because the mean of its divisors is an integer number (72580786).

Almost surely, 2^145161571 is an apocalyptic number.

145161571 is a deficient number, since it is larger than the sum of its proper divisors (1).

145161571 is an equidigital number, since it uses as much as digits as its factorization.

145161571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 31.

The square root of 145161571 is about 12048.3015815508. The cubic root of 145161571 is about 525.5538475627.

The spelling of 145161571 in words is "one hundred forty-five million, one hundred sixty-one thousand, five hundred seventy-one".