155941831 has 4 divisors (see below), whose sum is σ = 157372600. Its totient is φ = 154511064.

The previous prime is 155941829. The next prime is 155941853. The reversal of 155941831 is 138149551.

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 155941831 - 2¹ = 155941829 is a prime.

It is a super-2 number, since 2×155941831² = 48635709311265122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155941861) 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, 715221 + ... + 715438.

It is an arithmetic number, because the mean of its divisors is an integer number (39343150).

Almost surely, 2^155941831 is an apocalyptic number.

155941831 is a deficient number, since it is larger than the sum of its proper divisors (1430769).

155941831 is a wasteful number, since it uses less digits than its factorization.

155941831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430768.

The product of its digits is 21600, while the sum is 37.

The square root of 155941831 is about 12487.6671560384. The cubic root of 155941831 is about 538.2543434688.

The spelling of 155941831 in words is "one hundred fifty-five million, nine hundred forty-one thousand, eight hundred thirty-one".