145470531 has 32 divisors (see below), whose sum is σ = 204083712. Its totient is φ = 92102400.

The previous prime is 145470511. The next prime is 145470539. The reversal of 145470531 is 135074541.

It is not a de Polignac number, because 145470531 - 2¹¹ = 145468483 is a prime.

It is a super-3 number, since 3×145470531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (145470539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 963306 + ... + 963456.

It is an arithmetic number, because the mean of its divisors is an integer number (6377616).

Almost surely, 2^145470531 is an apocalyptic number.

145470531 is a deficient number, since it is larger than the sum of its proper divisors (58613181).

145470531 is a wasteful number, since it uses less digits than its factorization.

145470531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 145470531 is about 12061.1164906073. The cubic root of 145470531 is about 525.9264440027.

The spelling of 145470531 in words is "one hundred forty-five million, four hundred seventy thousand, five hundred thirty-one".