145215174 has 32 divisors (see below), whose sum is σ = 315885024. Its totient is φ = 44236800.

The previous prime is 145215167. The next prime is 145215181. The reversal of 145215174 is 471512541.

It is an interprime number because it is at equal distance from previous prime (145215167) and next prime (145215181).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339 + ... + 17094.

It is an arithmetic number, because the mean of its divisors is an integer number (9871407).

Almost surely, 2^145215174 is an apocalyptic number.

145215174 is an abundant number, since it is smaller than the sum of its proper divisors (170669850).

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

145215174 is a wasteful number, since it uses less digits than its factorization.

145215174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18552.

The product of its digits is 5600, while the sum is 30.

The square root of 145215174 is about 12050.5258806411. The cubic root of 145215174 is about 525.6185290434.

The spelling of 145215174 in words is "one hundred forty-five million, two hundred fifteen thousand, one hundred seventy-four".