265405051 has 2 divisors, whose sum is σ = 265405052. Its totient is φ = 265405050.

The previous prime is 265404991. The next prime is 265405103. The reversal of 265405051 is 150504562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265405051 - 2⁹ = 265404539 is a prime.

It is not a weakly prime, because it can be changed into another prime (265405351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132702525 + 132702526.

It is an arithmetic number, because the mean of its divisors is an integer number (132702526).

Almost surely, 2^265405051 is an apocalyptic number.

265405051 is a deficient number, since it is larger than the sum of its proper divisors (1).

265405051 is an equidigital number, since it uses as much as digits as its factorization.

265405051 is an odious number, because the sum of its binary digits is odd.

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

The square root of 265405051 is about 16291.2568882821. The cubic root of 265405051 is about 642.6429209629.

The spelling of 265405051 in words is "two hundred sixty-five million, four hundred five thousand, fifty-one".