145984501 has 4 divisors (see below), whose sum is σ = 157214092. Its totient is φ = 134754912.

The previous prime is 145984483. The next prime is 145984507. The reversal of 145984501 is 105489541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89283601 + 56700900 = 9449^2 + 7530^2 .

It is a cyclic number.

It is not a de Polignac number, because 145984501 - 2⁵ = 145984469 is a prime.

It is a super-3 number, since 3×145984501³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145984507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5614776 + ... + 5614801.

It is an arithmetic number, because the mean of its divisors is an integer number (39303523).

Almost surely, 2^145984501 is an apocalyptic number.

It is an amenable number.

145984501 is a deficient number, since it is larger than the sum of its proper divisors (11229591).

145984501 is a wasteful number, since it uses less digits than its factorization.

145984501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229590.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 145984501 is about 12082.4046033892. The cubic root of 145984501 is about 526.5451092549.

The spelling of 145984501 in words is "one hundred forty-five million, nine hundred eighty-four thousand, five hundred one".