145520338 has 4 divisors (see below), whose sum is σ = 218280510. Its totient is φ = 72760168.

The previous prime is 145520327. The next prime is 145520387. The reversal of 145520338 is 833025541.

145520338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 87104889 + 58415449 = 9333^2 + 7643^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36380083 + ... + 36380086.

Almost surely, 2^145520338 is an apocalyptic number.

145520338 is a deficient number, since it is larger than the sum of its proper divisors (72760172).

145520338 is an equidigital number, since it uses as much as digits as its factorization.

145520338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72760171.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 145520338 is about 12063.1810895800. The cubic root of 145520338 is about 525.9864603492.

Adding to 145520338 its reverse (833025541), we get a palindrome (978545879).

The spelling of 145520338 in words is "one hundred forty-five million, five hundred twenty thousand, three hundred thirty-eight".