145335531 has 8 divisors (see below), whose sum is σ = 211397184. Its totient is φ = 88082120.

The previous prime is 145335523. The next prime is 145335569. The reversal of 145335531 is 135533541.

145335531 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 145335531 - 2³ = 145335523 is a prime.

It is a super-2 number, since 2×145335531² = 42244833142103922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145335511) 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, 2202021 + ... + 2202086.

It is an arithmetic number, because the mean of its divisors is an integer number (26424648).

Almost surely, 2^145335531 is an apocalyptic number.

145335531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145335531 is a deficient number, since it is larger than the sum of its proper divisors (66061653).

145335531 is a wasteful number, since it uses less digits than its factorization.

145335531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404121.

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

The square root of 145335531 is about 12055.5186947721. The cubic root of 145335531 is about 525.7637030360.

The spelling of 145335531 in words is "one hundred forty-five million, three hundred thirty-five thousand, five hundred thirty-one".