145215371 has 12 divisors (see below), whose sum is σ = 170508888. Its totient is φ = 123302592.

The previous prime is 145215349. The next prime is 145215391. The reversal of 145215371 is 173512541.

It is not a de Polignac number, because 145215371 - 2¹⁰ = 145214347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145215391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8606 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (14209074).

Almost surely, 2^145215371 is an apocalyptic number.

145215371 is a deficient number, since it is larger than the sum of its proper divisors (25293517).

145215371 is a wasteful number, since it uses less digits than its factorization.

145215371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27818 (or 27811 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 145215371 is about 12050.5340545554. The cubic root of 145215371 is about 525.6187667293.

The spelling of 145215371 in words is "one hundred forty-five million, two hundred fifteen thousand, three hundred seventy-one".