145187075 has 48 divisors (see below), whose sum is σ = 212605440. Its totient is φ = 97200000.

The previous prime is 145187071. The next prime is 145187083. The reversal of 145187075 is 570781541.

It is a happy number.

It is not a de Polignac number, because 145187075 - 2² = 145187071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145187071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192950 + ... + 193700.

It is an arithmetic number, because the mean of its divisors is an integer number (4429280).

Almost surely, 2^145187075 is an apocalyptic number.

145187075 is a deficient number, since it is larger than the sum of its proper divisors (67418365).

145187075 is a wasteful number, since it uses less digits than its factorization.

145187075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 145187075 is about 12049.3599415073. The cubic root of 145187075 is about 525.5846246256.

The spelling of 145187075 in words is "one hundred forty-five million, one hundred eighty-seven thousand, seventy-five".