155156101 has 2 divisors, whose sum is σ = 155156102. Its totient is φ = 155156100.

The previous prime is 155156077. The next prime is 155156143. The reversal of 155156101 is 101651551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 22791076 = 11505^2 + 4774^2 .

It is a cyclic number.

It is not a de Polignac number, because 155156101 - 2¹⁵ = 155123333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155156191) 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 as a sum of consecutive naturals, namely, 77578050 + 77578051.

It is an arithmetic number, because the mean of its divisors is an integer number (77578051).

Almost surely, 2^155156101 is an apocalyptic number.

It is an amenable number.

155156101 is a deficient number, since it is larger than the sum of its proper divisors (1).

155156101 is an equidigital number, since it uses as much as digits as its factorization.

155156101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 155156101 is about 12456.1671873815. The cubic root of 155156101 is about 537.3488030470.

The spelling of 155156101 in words is "one hundred fifty-five million, one hundred fifty-six thousand, one hundred one".