10887421 has 2 divisors, whose sum is σ = 10887422. Its totient is φ = 10887420.

The previous prime is 10887407. The next prime is 10887431. The reversal of 10887421 is 12478801.

10887421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 3944196 = 2635^2 + 1986^2 .

It is a cyclic number.

It is not a de Polignac number, because 10887421 - 2¹¹ = 10885373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10887431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5443710 + 5443711.

It is an arithmetic number, because the mean of its divisors is an integer number (5443711).

Almost surely, 2^10887421 is an apocalyptic number.

It is an amenable number.

10887421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10887421 is an equidigital number, since it uses as much as digits as its factorization.

10887421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 10887421 is about 3299.6092192864. The cubic root of 10887421 is about 221.6366984819.

The spelling of 10887421 in words is "ten million, eight hundred eighty-seven thousand, four hundred twenty-one".