65151139 has 4 divisors (see below), whose sum is σ = 67397760. Its totient is φ = 62904520.

The previous prime is 65151137. The next prime is 65151143. The reversal of 65151139 is 93115156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65151139 - 2¹ = 65151137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65151139.

It is not an unprimeable number, because it can be changed into a prime (65151137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123267 + ... + 1123324.

It is an arithmetic number, because the mean of its divisors is an integer number (16849440).

Almost surely, 2^65151139 is an apocalyptic number.

65151139 is a deficient number, since it is larger than the sum of its proper divisors (2246621).

65151139 is a wasteful number, since it uses less digits than its factorization.

65151139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246620.

The product of its digits is 4050, while the sum is 31.

The square root of 65151139 is about 8071.6255487975. The cubic root of 65151139 is about 402.3839697439.

The spelling of 65151139 in words is "sixty-five million, one hundred fifty-one thousand, one hundred thirty-nine".