155266131 has 4 divisors (see below), whose sum is σ = 207021512. Its totient is φ = 103510752.

The previous prime is 155266129. The next prime is 155266187. The reversal of 155266131 is 131662551.

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

It is not a de Polignac number, because 155266131 - 2¹ = 155266129 is a prime.

It is a super-2 number, since 2×155266131² = 48215142871418322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155266231) 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, 25877686 + ... + 25877691.

It is an arithmetic number, because the mean of its divisors is an integer number (51755378).

Almost surely, 2^155266131 is an apocalyptic number.

155266131 is a deficient number, since it is larger than the sum of its proper divisors (51755381).

155266131 is an equidigital number, since it uses as much as digits as its factorization.

155266131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51755380.

The product of its digits is 5400, while the sum is 30.

The square root of 155266131 is about 12460.5830922955. The cubic root of 155266131 is about 537.4757945472.

The spelling of 155266131 in words is "one hundred fifty-five million, two hundred sixty-six thousand, one hundred thirty-one".