145004805 has 48 divisors (see below), whose sum is σ = 275768064. Its totient is φ = 69901440.

The previous prime is 145004803. The next prime is 145004819. The reversal of 145004805 is 508400541.

It is not a de Polignac number, because 145004805 - 2¹ = 145004803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145004801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96772 + ... + 98258.

It is an arithmetic number, because the mean of its divisors is an integer number (5745168).

Almost surely, 2^145004805 is an apocalyptic number.

145004805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145004805 is a deficient number, since it is larger than the sum of its proper divisors (130763259).

145004805 is a wasteful number, since it uses less digits than its factorization.

145004805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 145004805 is about 12041.7940939048. The cubic root of 145004805 is about 525.3645902863.

The spelling of 145004805 in words is "one hundred forty-five million, four thousand, eight hundred five".