87351247 has 2 divisors, whose sum is σ = 87351248. Its totient is φ = 87351246.

The previous prime is 87351241. The next prime is 87351259. The reversal of 87351247 is 74215378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87351247 - 2¹⁹ = 86826959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87351241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43675623 + 43675624.

It is an arithmetic number, because the mean of its divisors is an integer number (43675624).

Almost surely, 2^87351247 is an apocalyptic number.

87351247 is a deficient number, since it is larger than the sum of its proper divisors (1).

87351247 is an equidigital number, since it uses as much as digits as its factorization.

87351247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 87351247 is about 9346.1889024350. The cubic root of 87351247 is about 443.7002802986.

The spelling of 87351247 in words is "eighty-seven million, three hundred fifty-one thousand, two hundred forty-seven".