145151871 has 4 divisors (see below), whose sum is σ = 193535832. Its totient is φ = 96767912.

The previous prime is 145151869. The next prime is 145151893. The reversal of 145151871 is 178151541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145151871 - 2¹ = 145151869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145151821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24191976 + ... + 24191981.

It is an arithmetic number, because the mean of its divisors is an integer number (48383958).

Almost surely, 2^145151871 is an apocalyptic number.

145151871 is a deficient number, since it is larger than the sum of its proper divisors (48383961).

145151871 is an equidigital number, since it uses as much as digits as its factorization.

145151871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48383960.

The product of its digits is 5600, while the sum is 33.

The square root of 145151871 is about 12047.8990284614. The cubic root of 145151871 is about 525.5421410992.

The spelling of 145151871 in words is "one hundred forty-five million, one hundred fifty-one thousand, eight hundred seventy-one".