551980663 has 16 divisors (see below), whose sum is σ = 616694400. Its totient is φ = 490763520.

The previous prime is 551980621. The next prime is 551980669. The reversal of 551980663 is 366089155.

It is not a de Polignac number, because 551980663 - 2¹⁷ = 551849591 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 (551980669) 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, 35553 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (38543400).

Almost surely, 2^551980663 is an apocalyptic number.

551980663 is a deficient number, since it is larger than the sum of its proper divisors (64713737).

551980663 is a wasteful number, since it uses less digits than its factorization.

551980663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 551980663 is about 23494.2687266491. The cubic root of 551980663 is about 820.3036070870.

The spelling of 551980663 in words is "five hundred fifty-one million, nine hundred eighty thousand, six hundred sixty-three".