145023345 has 64 divisors (see below), whose sum is σ = 282528000. Its totient is φ = 70253568.

The previous prime is 145023337. The next prime is 145023377. The reversal of 145023345 is 543320541.

It is not a de Polignac number, because 145023345 - 2³ = 145023337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65466 + ... + 67644.

It is an arithmetic number, because the mean of its divisors is an integer number (4414500).

Almost surely, 2^145023345 is an apocalyptic number.

145023345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145023345 is a deficient number, since it is larger than the sum of its proper divisors (137504655).

145023345 is a wasteful number, since it uses less digits than its factorization.

145023345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 145023345 is about 12042.5638881428. The cubic root of 145023345 is about 525.3869799912.

Adding to 145023345 its reverse (543320541), we get a palindrome (688343886).

The spelling of 145023345 in words is "one hundred forty-five million, twenty-three thousand, three hundred forty-five".