145572671 has 2 divisors, whose sum is σ = 145572672. Its totient is φ = 145572670.

The previous prime is 145572667. The next prime is 145572697. The reversal of 145572671 is 176275541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145572671 - 2² = 145572667 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145572631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72786335 + 72786336.

It is an arithmetic number, because the mean of its divisors is an integer number (72786336).

Almost surely, 2^145572671 is an apocalyptic number.

145572671 is a deficient number, since it is larger than the sum of its proper divisors (1).

145572671 is an equidigital number, since it uses as much as digits as its factorization.

145572671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 38.

The square root of 145572671 is about 12065.3500156440. The cubic root of 145572671 is about 526.0495057185.

The spelling of 145572671 in words is "one hundred forty-five million, five hundred seventy-two thousand, six hundred seventy-one".