145121533 has 8 divisors (see below), whose sum is σ = 147778560. Its totient is φ = 142471200.

The previous prime is 145121521. The next prime is 145121567. The reversal of 145121533 is 335121541.

It is a happy number.

145121533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145121533 - 2¹³ = 145113341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145121498 and 145121507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145121573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66841 + ... + 68977.

It is an arithmetic number, because the mean of its divisors is an integer number (18472320).

Almost surely, 2^145121533 is an apocalyptic number.

It is an amenable number.

145121533 is a deficient number, since it is larger than the sum of its proper divisors (2657027).

145121533 is a wasteful number, since it uses less digits than its factorization.

145121533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347.

The product of its digits is 1800, while the sum is 25.

The square root of 145121533 is about 12046.6399049694. The cubic root of 145121533 is about 525.5055242595.

The spelling of 145121533 in words is "one hundred forty-five million, one hundred twenty-one thousand, five hundred thirty-three".