551463641 has 2 divisors, whose sum is σ = 551463642. Its totient is φ = 551463640.

The previous prime is 551463589. The next prime is 551463659. The reversal of 551463641 is 146364155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493017616 + 58446025 = 22204^2 + 7645^2 .

It is a cyclic number.

It is not a de Polignac number, because 551463641 - 2¹⁰ = 551462617 is a prime.

It is a super-2 number, since 2×551463641² = 608224294689953762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (551469641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275731820 + 275731821.

It is an arithmetic number, because the mean of its divisors is an integer number (275731821).

Almost surely, 2^551463641 is an apocalyptic number.

It is an amenable number.

551463641 is a deficient number, since it is larger than the sum of its proper divisors (1).

551463641 is an equidigital number, since it uses as much as digits as its factorization.

551463641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 551463641 is about 23483.2629972923. The cubic root of 551463641 is about 820.0474100092.

The spelling of 551463641 in words is "five hundred fifty-one million, four hundred sixty-three thousand, six hundred forty-one".