101451391 has 2 divisors, whose sum is σ = 101451392. Its totient is φ = 101451390.

The previous prime is 101451379. The next prime is 101451401. The reversal of 101451391 is 193154101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101451391 - 2⁷ = 101451263 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101455391) 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 as a sum of consecutive naturals, namely, 50725695 + 50725696.

It is an arithmetic number, because the mean of its divisors is an integer number (50725696).

Almost surely, 2^101451391 is an apocalyptic number.

101451391 is a deficient number, since it is larger than the sum of its proper divisors (1).

101451391 is an equidigital number, since it uses as much as digits as its factorization.

101451391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 101451391 is about 10072.3081267404. The cubic root of 101451391 is about 466.3936927943.

The spelling of 101451391 in words is "one hundred one million, four hundred fifty-one thousand, three hundred ninety-one".