155131667 has 2 divisors, whose sum is σ = 155131668. Its totient is φ = 155131666.

The previous prime is 155131651. The next prime is 155131673. The reversal of 155131667 is 766131551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155131667 - 2⁴ = 155131651 is a prime.

It is not a weakly prime, because it can be changed into another prime (155131607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77565833 + 77565834.

It is an arithmetic number, because the mean of its divisors is an integer number (77565834).

Almost surely, 2^155131667 is an apocalyptic number.

155131667 is a deficient number, since it is larger than the sum of its proper divisors (1).

155131667 is an equidigital number, since it uses as much as digits as its factorization.

155131667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 155131667 is about 12455.1863494690. The cubic root of 155131667 is about 537.3205943164.

The spelling of 155131667 in words is "one hundred fifty-five million, one hundred thirty-one thousand, six hundred sixty-seven".