145500531 has 8 divisors (see below), whose sum is σ = 211637184. Its totient is φ = 88182120.

The previous prime is 145500527. The next prime is 145500559. The reversal of 145500531 is 135005541.

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

It is not a de Polignac number, because 145500531 - 2² = 145500527 is a prime.

It is a super-2 number, since 2×145500531² = 42340809042563922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145500631) 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 7 ways as a sum of consecutive naturals, for example, 2204521 + ... + 2204586.

It is an arithmetic number, because the mean of its divisors is an integer number (26454648).

Almost surely, 2^145500531 is an apocalyptic number.

145500531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145500531 is a deficient number, since it is larger than the sum of its proper divisors (66136653).

145500531 is a wasteful number, since it uses less digits than its factorization.

145500531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409121.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 145500531 is about 12062.3600924529. The cubic root of 145500531 is about 525.9625949874.

The spelling of 145500531 in words is "one hundred forty-five million, five hundred thousand, five hundred thirty-one".