145170906 has 64 divisors (see below), whose sum is σ = 317521920. Its totient is φ = 44089920.

The previous prime is 145170899. The next prime is 145170913. The reversal of 145170906 is 609071541.

It is an interprime number because it is at equal distance from previous prime (145170899) and next prime (145170913).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 535551 + ... + 535821.

It is an arithmetic number, because the mean of its divisors is an integer number (4961280).

Almost surely, 2^145170906 is an apocalyptic number.

145170906 is an abundant number, since it is smaller than the sum of its proper divisors (172351014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145170906 is a wasteful number, since it uses less digits than its factorization.

145170906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 145170906 is about 12048.6889743241. The cubic root of 145170906 is about 525.5651130328.

The spelling of 145170906 in words is "one hundred forty-five million, one hundred seventy thousand, nine hundred six".