1554245155 has 4 divisors (see below), whose sum is σ = 1865094192. Its totient is φ = 1243396120.

The previous prime is 1554245149. The next prime is 1554245159. The reversal of 1554245155 is 5515424551.

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

It is not a de Polignac number, because 1554245155 - 2⁷ = 1554245027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1554245159) 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, 155424511 + ... + 155424520.

It is an arithmetic number, because the mean of its divisors is an integer number (466273548).

Almost surely, 2^1554245155 is an apocalyptic number.

1554245155 is a deficient number, since it is larger than the sum of its proper divisors (310849037).

1554245155 is an equidigital number, since it uses as much as digits as its factorization.

1554245155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310849036.

The product of its digits is 100000, while the sum is 37.

The square root of 1554245155 is about 39423.9160282182. The cubic root of 1554245155 is about 1158.3501006607.

The spelling of 1554245155 in words is "one billion, five hundred fifty-four million, two hundred forty-five thousand, one hundred fifty-five".