10501891 has 2 divisors, whose sum is σ = 10501892. Its totient is φ = 10501890.

The previous prime is 10501859. The next prime is 10501913. The reversal of 10501891 is 19810501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10501891 - 2⁵ = 10501859 is a prime.

It is a super-2 number, since 2×10501891² = 220579429151762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10501811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250945 + 5250946.

It is an arithmetic number, because the mean of its divisors is an integer number (5250946).

Almost surely, 2^10501891 is an apocalyptic number.

10501891 is a deficient number, since it is larger than the sum of its proper divisors (1).

10501891 is an equidigital number, since it uses as much as digits as its factorization.

10501891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 10501891 is about 3240.6621237025. The cubic root of 10501891 is about 218.9891017144.

The spelling of 10501891 in words is "ten million, five hundred one thousand, eight hundred ninety-one".