1554155455 has 4 divisors (see below), whose sum is σ = 1864986552. Its totient is φ = 1243324360.

The previous prime is 1554155431. The next prime is 1554155459. The reversal of 1554155455 is 5545514551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1554155455 - 2¹¹ = 1554153407 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 (1554155459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155415541 + ... + 155415550.

It is an arithmetic number, because the mean of its divisors is an integer number (466246638).

Almost surely, 2^1554155455 is an apocalyptic number.

1554155455 is a deficient number, since it is larger than the sum of its proper divisors (310831097).

1554155455 is an equidigital number, since it uses as much as digits as its factorization.

1554155455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310831096.

The product of its digits is 250000, while the sum is 40.

The square root of 1554155455 is about 39422.7783774812. The cubic root of 1554155455 is about 1158.3278163163.

The spelling of 1554155455 in words is "one billion, five hundred fifty-four million, one hundred fifty-five thousand, four hundred fifty-five".