145117851 has 8 divisors (see below), whose sum is σ = 199732224. Its totient is φ = 93624360.

The previous prime is 145117849. The next prime is 145117853. The reversal of 145117851 is 158711541.

It is an interprime number because it is at equal distance from previous prime (145117849) and next prime (145117853).

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

It is not a de Polignac number, because 145117851 - 2¹ = 145117849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145117853) 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, 780111 + ... + 780296.

It is an arithmetic number, because the mean of its divisors is an integer number (24966528).

Almost surely, 2^145117851 is an apocalyptic number.

145117851 is a deficient number, since it is larger than the sum of its proper divisors (54614373).

145117851 is a wasteful number, since it uses less digits than its factorization.

145117851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560441.

The product of its digits is 5600, while the sum is 33.

The square root of 145117851 is about 12046.4870813030. The cubic root of 145117851 is about 525.5010798749.

The spelling of 145117851 in words is "one hundred forty-five million, one hundred seventeen thousand, eight hundred fifty-one".