545139407 has 2 divisors, whose sum is σ = 545139408. Its totient is φ = 545139406.

The previous prime is 545139401. The next prime is 545139437. The reversal of 545139407 is 704931545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545139407 - 2²⁶ = 478030543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545139401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272569703 + 272569704.

It is an arithmetic number, because the mean of its divisors is an integer number (272569704).

Almost surely, 2^545139407 is an apocalyptic number.

545139407 is a deficient number, since it is larger than the sum of its proper divisors (1).

545139407 is an equidigital number, since it uses as much as digits as its factorization.

545139407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 545139407 is about 23348.2206388410. The cubic root of 545139407 is about 816.9005575440.

The spelling of 545139407 in words is "five hundred forty-five million, one hundred thirty-nine thousand, four hundred seven".