145459831 has 8 divisors (see below), whose sum is σ = 159934464. Its totient is φ = 131193720.

The previous prime is 145459817. The next prime is 145459849. The reversal of 145459831 is 138954541.

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 145459831 - 2⁷ = 145459703 is a prime.

It is a super-2 number, since 2×145459831² = 42317124869097122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145459891) 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, 50665 + ... + 53458.

It is an arithmetic number, because the mean of its divisors is an integer number (19991808).

Almost surely, 2^145459831 is an apocalyptic number.

145459831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145459831 is a deficient number, since it is larger than the sum of its proper divisors (14474633).

145459831 is a wasteful number, since it uses less digits than its factorization.

145459831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104261.

The product of its digits is 86400, while the sum is 40.

The square root of 145459831 is about 12060.6729082585. The cubic root of 145459831 is about 525.9135489490.

The spelling of 145459831 in words is "one hundred forty-five million, four hundred fifty-nine thousand, eight hundred thirty-one".