152278317 has 6 divisors (see below), whose sum is σ = 219957582. Its totient is φ = 101518872.

The previous prime is 152278309. The next prime is 152278319. The reversal of 152278317 is 713872251.

It can be written as a sum of positive squares in only one way, i.e., 98783721 + 53494596 = 9939^2 + 7314^2 .

It is not a de Polignac number, because 152278317 - 2³ = 152278309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152278319) by changing a digit.

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, 8459898 + ... + 8459915.

It is an arithmetic number, because the mean of its divisors is an integer number (36659597).

Almost surely, 2^152278317 is an apocalyptic number.

It is an amenable number.

152278317 is a deficient number, since it is larger than the sum of its proper divisors (67679265).

152278317 is a wasteful number, since it uses less digits than its factorization.

152278317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16919819 (or 16919816 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 152278317 is about 12340.1100886499. The cubic root of 152278317 is about 534.0058598860.

The spelling of 152278317 in words is "one hundred fifty-two million, two hundred seventy-eight thousand, three hundred seventeen".