155127493 has 2 divisors, whose sum is σ = 155127494. Its totient is φ = 155127492.

The previous prime is 155127473. The next prime is 155127523. The reversal of 155127493 is 394721551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93064609 + 62062884 = 9647^2 + 7878^2 .

It is a cyclic number.

It is not a de Polignac number, because 155127493 - 2¹³ = 155119301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155127443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77563746 + 77563747.

It is an arithmetic number, because the mean of its divisors is an integer number (77563747).

Almost surely, 2^155127493 is an apocalyptic number.

It is an amenable number.

155127493 is a deficient number, since it is larger than the sum of its proper divisors (1).

155127493 is an equidigital number, since it uses as much as digits as its factorization.

155127493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 155127493 is about 12455.0187876213. The cubic root of 155127493 is about 537.3157751923.

It can be divided in two parts, 15512 and 7493, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 155127493 in words is "one hundred fifty-five million, one hundred twenty-seven thousand, four hundred ninety-three".