53100391 has 2 divisors, whose sum is σ = 53100392. Its totient is φ = 53100390.

The previous prime is 53100379. The next prime is 53100431. The reversal of 53100391 is 19300135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53100391 - 2⁷ = 53100263 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 (53100301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26550195 + 26550196.

It is an arithmetic number, because the mean of its divisors is an integer number (26550196).

Almost surely, 2^53100391 is an apocalyptic number.

53100391 is a deficient number, since it is larger than the sum of its proper divisors (1).

53100391 is an equidigital number, since it uses as much as digits as its factorization.

53100391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 53100391 is about 7287.0015095374. The cubic root of 53100391 is about 375.8655939365.

Subtracting from 53100391 its sum of digits (22), we obtain a square (53100369 = 7287²).

The spelling of 53100391 in words is "fifty-three million, one hundred thousand, three hundred ninety-one".