145535501 has 4 divisors (see below), whose sum is σ = 147529212. Its totient is φ = 143541792.

The previous prime is 145535479. The next prime is 145535503. The reversal of 145535501 is 105535541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105535541 = 17 ⋅6207973.

It can be written as a sum of positive squares in 2 ways, for example, as 56987401 + 88548100 = 7549^2 + 9410^2 .

It is a cyclic number.

It is not a de Polignac number, because 145535501 - 2²⁶ = 78426637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145535503) 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, 996746 + ... + 996891.

It is an arithmetic number, because the mean of its divisors is an integer number (36882303).

Almost surely, 2^145535501 is an apocalyptic number.

It is an amenable number.

145535501 is a deficient number, since it is larger than the sum of its proper divisors (1993711).

145535501 is an equidigital number, since it uses as much as digits as its factorization.

145535501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993710.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 145535501 is about 12063.8095558576. The cubic root of 145535501 is about 526.0047287136.

The spelling of 145535501 in words is "one hundred forty-five million, five hundred thirty-five thousand, five hundred one".