155225455 has 24 divisors (see below), whose sum is σ = 233999136. Its totient is φ = 96761280.

The previous prime is 155225417. The next prime is 155225479. The reversal of 155225455 is 554522551.

It is a de Polignac number, because none of the positive numbers 2^k-155225455 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155225455.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 14092 + ... + 22561.

It is an arithmetic number, because the mean of its divisors is an integer number (9749964).

Almost surely, 2^155225455 is an apocalyptic number.

155225455 is a deficient number, since it is larger than the sum of its proper divisors (78773681).

155225455 is a wasteful number, since it uses less digits than its factorization.

155225455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36687 (or 36676 counting only the distinct ones).

The product of its digits is 50000, while the sum is 34.

The square root of 155225455 is about 12458.9507985223. The cubic root of 155225455 is about 537.4288551950.

The spelling of 155225455 in words is "one hundred fifty-five million, two hundred twenty-five thousand, four hundred fifty-five".