145298805 has 16 divisors (see below), whose sum is σ = 233388864. Its totient is φ = 77189120.

The previous prime is 145298801. The next prime is 145298807. The reversal of 145298805 is 508892541.

It is a happy number.

It is not a de Polignac number, because 145298805 - 2² = 145298801 is a prime.

It is a super-2 number, since 2×145298805² = 42223485468856050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145298801) 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 in 15 ways as a sum of consecutive naturals, for example, 14991 + ... + 22700.

It is an arithmetic number, because the mean of its divisors is an integer number (14586804).

Almost surely, 2^145298805 is an apocalyptic number.

145298805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145298805 is a deficient number, since it is larger than the sum of its proper divisors (88090059).

145298805 is a wasteful number, since it uses less digits than its factorization.

145298805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37956.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 145298805 is about 12053.9953957184. The cubic root of 145298805 is about 525.7194128240.

The spelling of 145298805 in words is "one hundred forty-five million, two hundred ninety-eight thousand, eight hundred five".