87751403 has 2 divisors, whose sum is σ = 87751404. Its totient is φ = 87751402.

The previous prime is 87751387. The next prime is 87751453. The reversal of 87751403 is 30415778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87751403 - 2⁴ = 87751387 is a prime.

It is not a weakly prime, because it can be changed into another prime (87751453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43875701 + 43875702.

It is an arithmetic number, because the mean of its divisors is an integer number (43875702).

Almost surely, 2^87751403 is an apocalyptic number.

87751403 is a deficient number, since it is larger than the sum of its proper divisors (1).

87751403 is an equidigital number, since it uses as much as digits as its factorization.

87751403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 87751403 is about 9367.5718838982. The cubic root of 87751403 is about 444.3767785573.

The spelling of 87751403 in words is "eighty-seven million, seven hundred fifty-one thousand, four hundred three".