155842811 has 4 divisors (see below), whose sum is σ = 157355952. Its totient is φ = 154329672.

The previous prime is 155842789. The next prime is 155842823. The reversal of 155842811 is 118248551.

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 155842811 - 2¹⁴ = 155826427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155842831) 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 in 3 ways as a sum of consecutive naturals, for example, 756416 + ... + 756621.

It is an arithmetic number, because the mean of its divisors is an integer number (39338988).

Almost surely, 2^155842811 is an apocalyptic number.

155842811 is a deficient number, since it is larger than the sum of its proper divisors (1513141).

155842811 is a wasteful number, since it uses less digits than its factorization.

155842811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513140.

The product of its digits is 12800, while the sum is 35.

The square root of 155842811 is about 12483.7018147663. The cubic root of 155842811 is about 538.1403923675.

The spelling of 155842811 in words is "one hundred fifty-five million, eight hundred forty-two thousand, eight hundred eleven".