1540516255 has 16 divisors (see below), whose sum is σ = 1883296800. Its totient is φ = 1209369600.

The previous prime is 1540516253. The next prime is 1540516259. The reversal of 1540516255 is 5526150451.

It is not a de Polignac number, because 1540516255 - 2¹ = 1540516253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1540516255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540516253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172951 + ... + 181639.

It is an arithmetic number, because the mean of its divisors is an integer number (117706050).

Almost surely, 2^1540516255 is an apocalyptic number.

1540516255 is a deficient number, since it is larger than the sum of its proper divisors (342780545).

1540516255 is an equidigital number, since it uses as much as digits as its factorization.

1540516255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354.

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1540516255 is about 39249.4108872987. The cubic root of 1540516255 is about 1154.9293773151.

The spelling of 1540516255 in words is "one billion, five hundred forty million, five hundred sixteen thousand, two hundred fifty-five".