545125391 has 2 divisors, whose sum is σ = 545125392. Its totient is φ = 545125390.

The previous prime is 545125387. The next prime is 545125423. The reversal of 545125391 is 193521545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545125391 - 2² = 545125387 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 (545185391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272562695 + 272562696.

It is an arithmetic number, because the mean of its divisors is an integer number (272562696).

Almost surely, 2^545125391 is an apocalyptic number.

545125391 is a deficient number, since it is larger than the sum of its proper divisors (1).

545125391 is an equidigital number, since it uses as much as digits as its factorization.

545125391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 545125391 is about 23347.9204855593. The cubic root of 545125391 is about 816.8935564136.

The spelling of 545125391 in words is "five hundred forty-five million, one hundred twenty-five thousand, three hundred ninety-one".