145730450 has 24 divisors (see below), whose sum is σ = 273467988. Its totient is φ = 57774080.

The previous prime is 145730449. The next prime is 145730467. The reversal of 145730450 is 54037541.

It can be written as a sum of positive squares in 6 ways, for example, as 552049 + 145178401 = 743^2 + 12049^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7247 + ... + 18546.

Almost surely, 2^145730450 is an apocalyptic number.

145730450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145730450 is a deficient number, since it is larger than the sum of its proper divisors (127737538).

145730450 is a wasteful number, since it uses less digits than its factorization.

145730450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25918 (or 25913 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 145730450 is about 12071.8867622257. The cubic root of 145730450 is about 526.2394900886.

Adding to 145730450 its reverse (54037541), we get a palindrome (199767991).

The spelling of 145730450 in words is "one hundred forty-five million, seven hundred thirty thousand, four hundred fifty".