145828531 has 2 divisors, whose sum is σ = 145828532. Its totient is φ = 145828530.

The previous prime is 145828519. The next prime is 145828577. The reversal of 145828531 is 135828541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145828531 - 2⁹ = 145828019 is a prime.

It is a super-2 number, since 2×145828531² = 42531920907235922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145828511) 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 as a sum of consecutive naturals, namely, 72914265 + 72914266.

It is an arithmetic number, because the mean of its divisors is an integer number (72914266).

Almost surely, 2^145828531 is an apocalyptic number.

145828531 is a deficient number, since it is larger than the sum of its proper divisors (1).

145828531 is an equidigital number, since it uses as much as digits as its factorization.

145828531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

The square root of 145828531 is about 12075.9484513640. The cubic root of 145828531 is about 526.3575219767.

The spelling of 145828531 in words is "one hundred forty-five million, eight hundred twenty-eight thousand, five hundred thirty-one".