155297873 has 16 divisors (see below), whose sum is σ = 170254224. Its totient is φ = 141066240.

The previous prime is 155297867. The next prime is 155297881. The reversal of 155297873 is 378792551.

155297873 = 1217² + 1218² + ... + 1313².

It can be written as a sum of positive squares in 8 ways, for example, as 4695889 + 150601984 = 2167^2 + 12272^2 .

It is not a de Polignac number, because 155297873 - 2²² = 151103569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155297273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66461 + ... + 68757.

It is an arithmetic number, because the mean of its divisors is an integer number (10640889).

Almost surely, 2^155297873 is an apocalyptic number.

It is an amenable number.

155297873 is a deficient number, since it is larger than the sum of its proper divisors (14956351).

155297873 is a wasteful number, since it uses less digits than its factorization.

155297873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452.

The product of its digits is 529200, while the sum is 47.

The square root of 155297873 is about 12461.8567236187. The cubic root of 155297873 is about 537.5124185341.

The spelling of 155297873 in words is "one hundred fifty-five million, two hundred ninety-seven thousand, eight hundred seventy-three".