145513533 has 16 divisors (see below), whose sum is σ = 222796800. Its totient is φ = 83548080.

The previous prime is 145513517. The next prime is 145513553. The reversal of 145513533 is 335315541.

145513533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145513533 - 2⁴ = 145513517 is a prime.

It is a super-2 number, since 2×145513533² = 42348376572284178, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145513533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145513513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115413 + ... + 116666.

It is an arithmetic number, because the mean of its divisors is an integer number (13924800).

Almost surely, 2^145513533 is an apocalyptic number.

It is an amenable number.

145513533 is a deficient number, since it is larger than the sum of its proper divisors (77283267).

145513533 is a wasteful number, since it uses less digits than its factorization.

145513533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232112.

The product of its digits is 13500, while the sum is 30.

The square root of 145513533 is about 12062.8990296694. The cubic root of 145513533 is about 525.9782612807.

The spelling of 145513533 in words is "one hundred forty-five million, five hundred thirteen thousand, five hundred thirty-three".