145240533 has 20 divisors (see below), whose sum is σ = 217290348. Its totient is φ = 96681600.

The previous prime is 145240531. The next prime is 145240547. The reversal of 145240533 is 335042541.

It can be written as a sum of positive squares in 2 ways, for example, as 49533444 + 95707089 = 7038^2 + 9783^2 .

It is not a de Polignac number, because 145240533 - 2¹ = 145240531 is a prime.

It is a super-2 number, since 2×145240533² = 42189624852248178, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 145240497 and 145240506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96535 + ... + 98027.

Almost surely, 2^145240533 is an apocalyptic number.

It is an amenable number.

145240533 is a deficient number, since it is larger than the sum of its proper divisors (72049815).

145240533 is a wasteful number, since it uses less digits than its factorization.

145240533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706 (or 2697 counting only the distinct ones).

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

The square root of 145240533 is about 12051.5780294532. The cubic root of 145240533 is about 525.6491236066.

The spelling of 145240533 in words is "one hundred forty-five million, two hundred forty thousand, five hundred thirty-three".