540605251 has 2 divisors, whose sum is σ = 540605252. Its totient is φ = 540605250.

The previous prime is 540605231. The next prime is 540605257. The reversal of 540605251 is 152506045.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540605251 is a prime.

It is not a weakly prime, because it can be changed into another prime (540605257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270302625 + 270302626.

It is an arithmetic number, because the mean of its divisors is an integer number (270302626).

Almost surely, 2^540605251 is an apocalyptic number.

540605251 is a deficient number, since it is larger than the sum of its proper divisors (1).

540605251 is an equidigital number, since it uses as much as digits as its factorization.

540605251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 540605251 is about 23250.9193581673. The cubic root of 540605251 is about 814.6294128582.

The spelling of 540605251 in words is "five hundred forty million, six hundred five thousand, two hundred fifty-one".