551536651 has 2 divisors, whose sum is σ = 551536652. Its totient is φ = 551536650.

The previous prime is 551536637. The next prime is 551536663. The reversal of 551536651 is 156635155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551536651 - 2¹³ = 551528459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551536651.

It is not a weakly prime, because it can be changed into another prime (551536751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275768325 + 275768326.

It is an arithmetic number, because the mean of its divisors is an integer number (275768326).

Almost surely, 2^551536651 is an apocalyptic number.

551536651 is a deficient number, since it is larger than the sum of its proper divisors (1).

551536651 is an equidigital number, since it uses as much as digits as its factorization.

551536651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 37.

The square root of 551536651 is about 23484.8174572425. The cubic root of 551536651 is about 820.0835979612.

The spelling of 551536651 in words is "five hundred fifty-one million, five hundred thirty-six thousand, six hundred fifty-one".