549154915 has 4 divisors (see below), whose sum is σ = 658985904. Its totient is φ = 439323928.

The previous prime is 549154873. The next prime is 549154939. The reversal of 549154915 is 519451945.

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

It is a cyclic number.

It is not a de Polignac number, because 549154915 - 2⁷ = 549154787 is a prime.

It is a super-2 number, since 2×549154915² = 603142241337314450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54915487 + ... + 54915496.

It is an arithmetic number, because the mean of its divisors is an integer number (164746476).

Almost surely, 2^549154915 is an apocalyptic number.

549154915 is a deficient number, since it is larger than the sum of its proper divisors (109830989).

549154915 is a wasteful number, since it uses less digits than its factorization.

549154915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109830988.

The product of its digits is 162000, while the sum is 43.

The square root of 549154915 is about 23434.0546000900. The cubic root of 549154915 is about 818.9014214822.

It can be divided in two parts, 5491 and 54915, that added together give a palindrome (60406).

The spelling of 549154915 in words is "five hundred forty-nine million, one hundred fifty-four thousand, nine hundred fifteen".