145051917 has 8 divisors (see below), whose sum is σ = 197517696. Its totient is φ = 94643712.

The previous prime is 145051903. The next prime is 145051967. The reversal of 145051917 is 719150541.

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

It is not a de Polignac number, because 145051917 - 2⁶ = 145051853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145051967) 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 7 ways as a sum of consecutive naturals, for example, 514228 + ... + 514509.

It is an arithmetic number, because the mean of its divisors is an integer number (24689712).

Almost surely, 2^145051917 is an apocalyptic number.

It is an amenable number.

145051917 is a deficient number, since it is larger than the sum of its proper divisors (52465779).

145051917 is a wasteful number, since it uses less digits than its factorization.

145051917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028787.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 145051917 is about 12043.7501219512. The cubic root of 145051917 is about 525.4214810367.

The spelling of 145051917 in words is "one hundred forty-five million, fifty-one thousand, nine hundred seventeen".