540378551 has 2 divisors, whose sum is σ = 540378552. Its totient is φ = 540378550.

The previous prime is 540378539. The next prime is 540378593. The reversal of 540378551 is 155873045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540378551 - 2¹⁰ = 540377527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540378521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270189275 + 270189276.

It is an arithmetic number, because the mean of its divisors is an integer number (270189276).

Almost surely, 2^540378551 is an apocalyptic number.

540378551 is a deficient number, since it is larger than the sum of its proper divisors (1).

540378551 is an equidigital number, since it uses as much as digits as its factorization.

540378551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 540378551 is about 23246.0437709301. The cubic root of 540378551 is about 814.5155267352.

The spelling of 540378551 in words is "five hundred forty million, three hundred seventy-eight thousand, five hundred fifty-one".