155503455 has 8 divisors (see below), whose sum is σ = 248805552. Its totient is φ = 82935168.

The previous prime is 155503441. The next prime is 155503459. The reversal of 155503455 is 554305551.

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

It is not a de Polignac number, because 155503455 - 2¹¹ = 155501407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155503459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5183434 + ... + 5183463.

It is an arithmetic number, because the mean of its divisors is an integer number (31100694).

Almost surely, 2^155503455 is an apocalyptic number.

155503455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155503455 is a deficient number, since it is larger than the sum of its proper divisors (93302097).

155503455 is a wasteful number, since it uses less digits than its factorization.

155503455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366905.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 155503455 is about 12470.1024454493. The cubic root of 155503455 is about 537.7494987353.

The spelling of 155503455 in words is "one hundred fifty-five million, five hundred three thousand, four hundred fifty-five".