155878852 has 12 divisors (see below), whose sum is σ = 273382956. Its totient is φ = 77769440.

The previous prime is 155878813. The next prime is 155878901. The reversal of 155878852 is 258878551.

It can be written as a sum of positive squares in 2 ways, for example, as 32535616 + 123343236 = 5704^2 + 11106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155878796 and 155878805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40423 + ... + 44110.

It is an arithmetic number, because the mean of its divisors is an integer number (22781913).

Almost surely, 2^155878852 is an apocalyptic number.

It is an amenable number.

155878852 is a deficient number, since it is larger than the sum of its proper divisors (117504104).

155878852 is a wasteful number, since it uses less digits than its factorization.

155878852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84998 (or 84996 counting only the distinct ones).

The product of its digits is 896000, while the sum is 49.

The square root of 155878852 is about 12485.1452534602. The cubic root of 155878852 is about 538.1818735301.

The spelling of 155878852 in words is "one hundred fifty-five million, eight hundred seventy-eight thousand, eight hundred fifty-two".