145851856 has 10 divisors (see below), whose sum is σ = 282588002. Its totient is φ = 72925920.

The previous prime is 145851841. The next prime is 145851877. The reversal of 145851856 is 658158541.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 30074256 = 10760^2 + 5484^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4557855 + ... + 4557886.

Almost surely, 2^145851856 is an apocalyptic number.

145851856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145851856 is a deficient number, since it is larger than the sum of its proper divisors (136736146).

145851856 is an equidigital number, since it uses as much as digits as its factorization.

145851856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115749 (or 9115743 counting only the distinct ones).

The product of its digits is 192000, while the sum is 43.

The square root of 145851856 is about 12076.9141754009. The cubic root of 145851856 is about 526.3855837800.

The spelling of 145851856 in words is "one hundred forty-five million, eight hundred fifty-one thousand, eight hundred fifty-six".