145836217 has 8 divisors (see below), whose sum is σ = 154706976. Its totient is φ = 136997952.

The previous prime is 145836199. The next prime is 145836227. The reversal of 145836217 is 712638541.

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 145836217 - 2²⁷ = 11618489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145836227) 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, 1458 + ... + 17140.

It is an arithmetic number, because the mean of its divisors is an integer number (19338372).

Almost surely, 2^145836217 is an apocalyptic number.

145836217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

145836217 is a deficient number, since it is larger than the sum of its proper divisors (8870759).

145836217 is a wasteful number, since it uses less digits than its factorization.

145836217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16247.

The product of its digits is 40320, while the sum is 37.

The square root of 145836217 is about 12076.2666830441. The cubic root of 145836217 is about 526.3667691677.

It can be divided in two parts, 1458 and 36217, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 145836217 in words is "one hundred forty-five million, eight hundred thirty-six thousand, two hundred seventeen".