155555455 has 8 divisors (see below), whose sum is σ = 203636304. Its totient is φ = 113131200.

The previous prime is 155555419. The next prime is 155555459. The reversal of 155555455 is 554555551.

It is a happy number.

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

It is not a de Polignac number, because 155555455 - 2⁷ = 155555327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155555459) 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, 1414086 + ... + 1414195.

It is an arithmetic number, because the mean of its divisors is an integer number (25454538).

Almost surely, 2^155555455 is an apocalyptic number.

155555455 is a deficient number, since it is larger than the sum of its proper divisors (48080849).

155555455 is a wasteful number, since it uses less digits than its factorization.

155555455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828297.

The product of its digits is 312500, while the sum is 40.

The square root of 155555455 is about 12472.1872580554. The cubic root of 155555455 is about 537.8094327897.

The spelling of 155555455 in words is "one hundred fifty-five million, five hundred fifty-five thousand, four hundred fifty-five".