145175771 has 8 divisors (see below), whose sum is σ = 156437904. Its totient is φ = 133927200.

The previous prime is 145175741. The next prime is 145175819. The reversal of 145175771 is 177571541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145175771 - 2⁶ = 145175707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145175731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35105 + ... + 39021.

It is an arithmetic number, because the mean of its divisors is an integer number (19554738).

Almost surely, 2^145175771 is an apocalyptic number.

145175771 is a deficient number, since it is larger than the sum of its proper divisors (11262133).

145175771 is a wasteful number, since it uses less digits than its factorization.

145175771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its digits is 34300, while the sum is 38.

The square root of 145175771 is about 12048.8908618179. The cubic root of 145175771 is about 525.5709839192.

The spelling of 145175771 in words is "one hundred forty-five million, one hundred seventy-five thousand, seven hundred seventy-one".