145315847 has 12 divisors (see below), whose sum is σ = 156916296. Its totient is φ = 134509440.

The previous prime is 145315837. The next prime is 145315861. The reversal of 145315847 is 748513541.

It is not a de Polignac number, because 145315847 - 2⁶ = 145315783 is a prime.

It is a super-2 number, since 2×145315847² = 42233390778654818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145315847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145315837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13508 + ... + 21750.

It is an arithmetic number, because the mean of its divisors is an integer number (13076358).

Almost surely, 2^145315847 is an apocalyptic number.

145315847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145315847 is a deficient number, since it is larger than the sum of its proper divisors (11600449).

145315847 is an equidigital number, since it uses as much as digits as its factorization.

145315847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338 (or 8321 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 145315847 is about 12054.7022775347. The cubic root of 145315847 is about 525.7399657803.

The spelling of 145315847 in words is "one hundred forty-five million, three hundred fifteen thousand, eight hundred forty-seven".