87799451 has 2 divisors, whose sum is σ = 87799452. Its totient is φ = 87799450.

The previous prime is 87799423. The next prime is 87799457. The reversal of 87799451 is 15499778.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87799451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87799451.

It is not a weakly prime, because it can be changed into another prime (87799457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43899725 + 43899726.

It is an arithmetic number, because the mean of its divisors is an integer number (43899726).

Almost surely, 2^87799451 is an apocalyptic number.

87799451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87799451 is an equidigital number, since it uses as much as digits as its factorization.

87799451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 87799451 is about 9370.1361249450. The cubic root of 87799451 is about 444.4578694533.

The spelling of 87799451 in words is "eighty-seven million, seven hundred ninety-nine thousand, four hundred fifty-one".