551541971 has 4 divisors (see below), whose sum is σ = 560890200. Its totient is φ = 542193744.

The previous prime is 551541961. The next prime is 551542021. The reversal of 551541971 is 179145155.

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 551541971 - 2¹⁴ = 551525587 is a prime.

It is a super-3 number, since 3×551541971³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551541901) 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, 4674026 + ... + 4674143.

It is an arithmetic number, because the mean of its divisors is an integer number (140222550).

Almost surely, 2^551541971 is an apocalyptic number.

551541971 is a deficient number, since it is larger than the sum of its proper divisors (9348229).

551541971 is an equidigital number, since it uses as much as digits as its factorization.

551541971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348228.

The product of its digits is 31500, while the sum is 38.

The square root of 551541971 is about 23484.9307216351. The cubic root of 551541971 is about 820.0862347342.

The spelling of 551541971 in words is "five hundred fifty-one million, five hundred forty-one thousand, nine hundred seventy-one".