145534521 has 8 divisors (see below), whose sum is σ = 211686624. Its totient is φ = 88202720.

The previous prime is 145534481. The next prime is 145534531. The reversal of 145534521 is 125435541.

145534521 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 145534521 - 2⁶ = 145534457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145534531) 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, 2205036 + ... + 2205101.

It is an arithmetic number, because the mean of its divisors is an integer number (26460828).

Almost surely, 2^145534521 is an apocalyptic number.

145534521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145534521 is a deficient number, since it is larger than the sum of its proper divisors (66152103).

145534521 is a wasteful number, since it uses less digits than its factorization.

145534521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410151.

The product of its digits is 12000, while the sum is 30.

The square root of 145534521 is about 12063.7689384371. The cubic root of 145534521 is about 526.0035480491.

The spelling of 145534521 in words is "one hundred forty-five million, five hundred thirty-four thousand, five hundred twenty-one".