155232079 has 2 divisors, whose sum is σ = 155232080. Its totient is φ = 155232078.

The previous prime is 155232061. The next prime is 155232089. The reversal of 155232079 is 970232551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155232079 - 2⁹ = 155231567 is a prime.

It is equal to p_8721862 and since 155232079 and 8721862 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155232019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77616039 + 77616040.

It is an arithmetic number, because the mean of its divisors is an integer number (77616040).

Almost surely, 2^155232079 is an apocalyptic number.

155232079 is a deficient number, since it is larger than the sum of its proper divisors (1).

155232079 is an equidigital number, since it uses as much as digits as its factorization.

155232079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 155232079 is about 12459.2166286649. The cubic root of 155232079 is about 537.4364997275.

The spelling of 155232079 in words is "one hundred fifty-five million, two hundred thirty-two thousand, seventy-nine".