554155491 has 16 divisors (see below), whose sum is σ = 788933376. Its totient is φ = 345154656.

The previous prime is 554155487. The next prime is 554155493. The reversal of 554155491 is 194551455.

It is not a de Polignac number, because 554155491 - 2² = 554155487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (554155493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90420 + ... + 96353.

It is an arithmetic number, because the mean of its divisors is an integer number (49308336).

Almost surely, 2^554155491 is an apocalyptic number.

554155491 is a deficient number, since it is larger than the sum of its proper divisors (234777885).

554155491 is a wasteful number, since it uses less digits than its factorization.

554155491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186842.

The product of its digits is 90000, while the sum is 39.

The square root of 554155491 is about 23540.5074499255. The cubic root of 554155491 is about 821.3795393010.

It can be divided in two parts, 55415 and 5491, that added together give a palindrome (60906).

The spelling of 554155491 in words is "five hundred fifty-four million, one hundred fifty-five thousand, four hundred ninety-one".