87210451 has 2 divisors, whose sum is σ = 87210452. Its totient is φ = 87210450.

The previous prime is 87210439. The next prime is 87210467. The reversal of 87210451 is 15401278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87210451 - 2¹³ = 87202259 is a prime.

It is not a weakly prime, because it can be changed into another prime (87210401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43605225 + 43605226.

It is an arithmetic number, because the mean of its divisors is an integer number (43605226).

Almost surely, 2^87210451 is an apocalyptic number.

87210451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87210451 is an equidigital number, since it uses as much as digits as its factorization.

87210451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 87210451 is about 9338.6535967451. The cubic root of 87210451 is about 443.4617612109.

The spelling of 87210451 in words is "eighty-seven million, two hundred ten thousand, four hundred fifty-one".