550391465 has 16 divisors (see below), whose sum is σ = 730501968. Its totient is φ = 395456256.

The previous prime is 550391461. The next prime is 550391477. The reversal of 550391465 is 564193055.

It can be written as a sum of positive squares in 8 ways, for example, as 817216 + 549574249 = 904^2 + 23443^2 .

It is not a de Polignac number, because 550391465 - 2² = 550391461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550391461) 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, 112022 + ... + 116831.

It is an arithmetic number, because the mean of its divisors is an integer number (45656373).

Almost surely, 2^550391465 is an apocalyptic number.

It is an amenable number.

550391465 is a deficient number, since it is larger than the sum of its proper divisors (180110503).

550391465 is a wasteful number, since it uses less digits than its factorization.

550391465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228908.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 550391465 is about 23460.4233764014. The cubic root of 550391465 is about 819.5156097135.

The spelling of 550391465 in words is "five hundred fifty million, three hundred ninety-one thousand, four hundred sixty-five".