87151399 has 2 divisors, whose sum is σ = 87151400. Its totient is φ = 87151398.

The previous prime is 87151397. The next prime is 87151403. The reversal of 87151399 is 99315178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87151399 - 2¹ = 87151397 is a prime.

Together with 87151397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87151397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43575699 + 43575700.

It is an arithmetic number, because the mean of its divisors is an integer number (43575700).

Almost surely, 2^87151399 is an apocalyptic number.

87151399 is a deficient number, since it is larger than the sum of its proper divisors (1).

87151399 is an equidigital number, since it uses as much as digits as its factorization.

87151399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 87151399 is about 9335.4913636080. The cubic root of 87151399 is about 443.3616462342.

The spelling of 87151399 in words is "eighty-seven million, one hundred fifty-one thousand, three hundred ninety-nine".