551876441 has 4 divisors (see below), whose sum is σ = 565336884. Its totient is φ = 538416000.

The previous prime is 551876431. The next prime is 551876447. The reversal of 551876441 is 144678155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144678155 = 5 ⋅28935631.

It can be written as a sum of positive squares in 2 ways, for example, as 46526041 + 505350400 = 6821^2 + 22480^2 .

It is a cyclic number.

It is not a de Polignac number, because 551876441 - 2¹⁰ = 551875417 is a prime.

It is a super-2 number, since 2×551876441² = 609135212261652962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 13460401 = 551876441 / (5 + 5 + 1 + 8 + 7 + 6 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551876447) 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, 6730160 + ... + 6730241.

It is an arithmetic number, because the mean of its divisors is an integer number (141334221).

Almost surely, 2^551876441 is an apocalyptic number.

It is an amenable number.

551876441 is a deficient number, since it is larger than the sum of its proper divisors (13460443).

551876441 is a wasteful number, since it uses less digits than its factorization.

551876441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460442.

The product of its digits is 134400, while the sum is 41.

The square root of 551876441 is about 23492.0505916363. The cubic root of 551876441 is about 820.2519754088.

The spelling of 551876441 in words is "five hundred fifty-one million, eight hundred seventy-six thousand, four hundred forty-one".