155342865 has 16 divisors (see below), whose sum is σ = 250135488. Its totient is φ = 82320576.

The previous prime is 155342861. The next prime is 155342951. The reversal of 155342865 is 568243551.

It is not a de Polignac number, because 155342865 - 2² = 155342861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155342861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30627 + ... + 35336.

It is an arithmetic number, because the mean of its divisors is an integer number (15633468).

Almost surely, 2^155342865 is an apocalyptic number.

155342865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155342865 is a deficient number, since it is larger than the sum of its proper divisors (94792623).

155342865 is a wasteful number, since it uses less digits than its factorization.

155342865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66128.

The product of its digits is 144000, while the sum is 39.

The square root of 155342865 is about 12463.6617813546. The cubic root of 155342865 is about 537.5643218499.

The spelling of 155342865 in words is "one hundred fifty-five million, three hundred forty-two thousand, eight hundred sixty-five".