868100551 has 2 divisors, whose sum is σ = 868100552. Its totient is φ = 868100550.

The previous prime is 868100537. The next prime is 868100567. The reversal of 868100551 is 155001868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868100551 - 2⁷ = 868100423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868100501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434050275 + 434050276.

It is an arithmetic number, because the mean of its divisors is an integer number (434050276).

Almost surely, 2^868100551 is an apocalyptic number.

868100551 is a deficient number, since it is larger than the sum of its proper divisors (1).

868100551 is an equidigital number, since it uses as much as digits as its factorization.

868100551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 868100551 is about 29463.5461375578. The cubic root of 868100551 is about 953.9450173927.

The spelling of 868100551 in words is "eight hundred sixty-eight million, one hundred thousand, five hundred fifty-one".