87426551 has 2 divisors, whose sum is σ = 87426552. Its totient is φ = 87426550.

The previous prime is 87426527. The next prime is 87426571. The reversal of 87426551 is 15562478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87426551 - 2⁶ = 87426487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87426571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43713275 + 43713276.

It is an arithmetic number, because the mean of its divisors is an integer number (43713276).

Almost surely, 2^87426551 is an apocalyptic number.

87426551 is a deficient number, since it is larger than the sum of its proper divisors (1).

87426551 is an equidigital number, since it uses as much as digits as its factorization.

87426551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 87426551 is about 9350.2166285065. The cubic root of 87426551 is about 443.8277457908.

The spelling of 87426551 in words is "eighty-seven million, four hundred twenty-six thousand, five hundred fifty-one".