155672285 has 8 divisors (see below), whose sum is σ = 191363256. Its totient is φ = 121500160.

The previous prime is 155672269. The next prime is 155672291. The reversal of 155672285 is 582276551.

It can be written as a sum of positive squares in 4 ways, for example, as 10252804 + 145419481 = 3202^2 + 12059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155672285 - 2⁴ = 155672269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379484 + ... + 379893.

It is an arithmetic number, because the mean of its divisors is an integer number (23920407).

Almost surely, 2^155672285 is an apocalyptic number.

It is an amenable number.

155672285 is a deficient number, since it is larger than the sum of its proper divisors (35690971).

155672285 is an equidigital number, since it uses as much as digits as its factorization.

155672285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759423.

The product of its digits is 168000, while the sum is 41.

The square root of 155672285 is about 12476.8700001242. The cubic root of 155672285 is about 537.9440397749.

The spelling of 155672285 in words is "one hundred fifty-five million, six hundred seventy-two thousand, two hundred eighty-five".