145446771 has 8 divisors (see below), whose sum is σ = 193988304. Its totient is φ = 96934880.

The previous prime is 145446757. The next prime is 145446773. The reversal of 145446771 is 177644541.

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 145446771 - 2¹⁰ = 145445747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145446773) 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, 9661 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (24248538).

Almost surely, 2^145446771 is an apocalyptic number.

145446771 is a deficient number, since it is larger than the sum of its proper divisors (48541533).

145446771 is an equidigital number, since it uses as much as digits as its factorization.

145446771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14821.

The product of its digits is 94080, while the sum is 39.

The square root of 145446771 is about 12060.1314669451. The cubic root of 145446771 is about 525.8978088956.

The spelling of 145446771 in words is "one hundred forty-five million, four hundred forty-six thousand, seven hundred seventy-one".