145018546 has 4 divisors (see below), whose sum is σ = 217527822. Its totient is φ = 72509272.

The previous prime is 145018543. The next prime is 145018579. The reversal of 145018546 is 645810541.

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

It can be written as a sum of positive squares in only one way, i.e., 101787921 + 43230625 = 10089^2 + 6575^2 .

It is not an unprimeable number, because it can be changed into a prime (145018543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36254635 + ... + 36254638.

Almost surely, 2^145018546 is an apocalyptic number.

145018546 is a deficient number, since it is larger than the sum of its proper divisors (72509276).

145018546 is an equidigital number, since it uses as much as digits as its factorization.

145018546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72509275.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 145018546 is about 12042.3646349046. The cubic root of 145018546 is about 525.3811846946.

The spelling of 145018546 in words is "one hundred forty-five million, eighteen thousand, five hundred forty-six".