87251603 has 2 divisors, whose sum is σ = 87251604. Its totient is φ = 87251602.

The previous prime is 87251543. The next prime is 87251611. The reversal of 87251603 is 30615278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87251603 - 2⁶ = 87251539 is a prime.

It is a super-2 number, since 2×87251603² = 15225684452139218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87251603.

It is not a weakly prime, because it can be changed into another prime (87251623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43625801 + 43625802.

It is an arithmetic number, because the mean of its divisors is an integer number (43625802).

Almost surely, 2^87251603 is an apocalyptic number.

87251603 is a deficient number, since it is larger than the sum of its proper divisors (1).

87251603 is an equidigital number, since it uses as much as digits as its factorization.

87251603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 87251603 is about 9340.8566523633. The cubic root of 87251603 is about 443.5315023505.

The spelling of 87251603 in words is "eighty-seven million, two hundred fifty-one thousand, six hundred three".