87760251 has 6 divisors (see below), whose sum is σ = 126764820. Its totient is φ = 58506828.

The previous prime is 87760201. The next prime is 87760271. The reversal of 87760251 is 15206778.

It is not a de Polignac number, because 87760251 - 2⁹ = 87759739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87760201) 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 in 5 ways as a sum of consecutive naturals, for example, 4875561 + ... + 4875578.

It is an arithmetic number, because the mean of its divisors is an integer number (21127470).

Almost surely, 2^87760251 is an apocalyptic number.

87760251 is a deficient number, since it is larger than the sum of its proper divisors (39004569).

87760251 is a wasteful number, since it uses less digits than its factorization.

87760251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751145 (or 9751142 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 87760251 is about 9368.0441395203. The cubic root of 87760251 is about 444.3917136028.

The spelling of 87760251 in words is "eighty-seven million, seven hundred sixty thousand, two hundred fifty-one".