145552250 has 16 divisors (see below), whose sum is σ = 272474280. Its totient is φ = 58220800.

The previous prime is 145552243. The next prime is 145552259. The reversal of 145552250 is 52255541.

It can be written as a sum of positive squares in 4 ways, for example, as 8357881 + 137194369 = 2891^2 + 11713^2 .

It is not an unprimeable number, because it can be changed into a prime (145552259) 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, 290855 + ... + 291354.

Almost surely, 2^145552250 is an apocalyptic number.

145552250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145552250 is a deficient number, since it is larger than the sum of its proper divisors (126922030).

145552250 is an equidigital number, since it uses as much as digits as its factorization.

145552250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582226 (or 582216 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 145552250 is about 12064.5037195900. The cubic root of 145552250 is about 526.0249064141.

The spelling of 145552250 in words is "one hundred forty-five million, five hundred fifty-two thousand, two hundred fifty".