87251602 has 8 divisors (see below), whose sum is σ = 131049036. Its totient is φ = 43568592.

The previous prime is 87251543. The next prime is 87251603. The reversal of 87251602 is 20615278.

It can be written as a sum of positive squares in 2 ways, for example, as 87067561 + 184041 = 9331^2 + 429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×87251602² = 15225684103132808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87251603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26673 + ... + 29764.

Almost surely, 2^87251602 is an apocalyptic number.

87251602 is a deficient number, since it is larger than the sum of its proper divisors (43797434).

87251602 is a wasteful number, since it uses less digits than its factorization.

87251602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57212.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 87251602 is about 9340.8565988350. The cubic root of 87251602 is about 443.5315006560.

The spelling of 87251602 in words is "eighty-seven million, two hundred fifty-one thousand, six hundred two".