145515834 has 12 divisors (see below), whose sum is σ = 315284346. Its totient is φ = 48505272.

The previous prime is 145515817. The next prime is 145515883. The reversal of 145515834 is 438515541.

It can be written as a sum of positive squares in only one way, i.e., 136960209 + 8555625 = 11703^2 + 2925^2 .

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 5 ways as a sum of consecutive naturals, for example, 4042089 + ... + 4042124.

Almost surely, 2^145515834 is an apocalyptic number.

145515834 is an abundant number, since it is smaller than the sum of its proper divisors (169768512).

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

145515834 is a wasteful number, since it uses less digits than its factorization.

145515834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084221 (or 8084218 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 145515834 is about 12062.9944043757. The cubic root of 145515834 is about 525.9810336909.

The spelling of 145515834 in words is "one hundred forty-five million, five hundred fifteen thousand, eight hundred thirty-four".