155050065 has 32 divisors (see below), whose sum is σ = 284544000. Its totient is φ = 80023680.

The previous prime is 155050057. The next prime is 155050067. The reversal of 155050065 is 560050551.

155050065 is a `hidden beast` number, since 1 + 550 + 50 + 0 + 65 = 666.

It is not a de Polignac number, because 155050065 - 2³ = 155050057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155050067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14340 + ... + 22709.

It is an arithmetic number, because the mean of its divisors is an integer number (8892000).

Almost surely, 2^155050065 is an apocalyptic number.

155050065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155050065 is a deficient number, since it is larger than the sum of its proper divisors (129493935).

155050065 is a wasteful number, since it uses less digits than its factorization.

155050065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37094 (or 37088 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 155050065 is about 12451.9100944393. The cubic root of 155050065 is about 537.2263644143.

It can be divided in two parts, 1550 and 50065, that added together give a palindrome (51615).

The spelling of 155050065 in words is "one hundred fifty-five million, fifty thousand, sixty-five".