65042555 has 8 divisors (see below), whose sum is σ = 78307152. Its totient is φ = 51863328.

The previous prime is 65042533. The next prime is 65042569. The reversal of 65042555 is 55524056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65042555 - 2¹⁰ = 65041531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19652 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (9788394).

Almost surely, 2^65042555 is an apocalyptic number.

65042555 is a deficient number, since it is larger than the sum of its proper divisors (13264597).

65042555 is a wasteful number, since it uses less digits than its factorization.

65042555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42685.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 65042555 is about 8064.8964655475. The cubic root of 65042555 is about 402.1603013248.

The spelling of 65042555 in words is "sixty-five million, forty-two thousand, five hundred fifty-five".