87597551 has 2 divisors, whose sum is σ = 87597552. Its totient is φ = 87597550.

The previous prime is 87597541. The next prime is 87597557. The reversal of 87597551 is 15579578.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87597551 - 2¹⁰ = 87596527 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87597496 and 87597505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87597557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43798775 + 43798776.

It is an arithmetic number, because the mean of its divisors is an integer number (43798776).

Almost surely, 2^87597551 is an apocalyptic number.

87597551 is a deficient number, since it is larger than the sum of its proper divisors (1).

87597551 is an equidigital number, since it uses as much as digits as its factorization.

87597551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 47.

The square root of 87597551 is about 9359.3563347059. The cubic root of 87597551 is about 444.1169223089.

The spelling of 87597551 in words is "eighty-seven million, five hundred ninety-seven thousand, five hundred fifty-one".