155399127 has 16 divisors (see below), whose sum is σ = 227350368. Its totient is φ = 93824640.

The previous prime is 155399077. The next prime is 155399213. The reversal of 155399127 is 721993551.

It is not a de Polignac number, because 155399127 - 2¹⁵ = 155366359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155399327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35524 + ... + 39657.

It is an arithmetic number, because the mean of its divisors is an integer number (14209398).

Almost surely, 2^155399127 is an apocalyptic number.

155399127 is a deficient number, since it is larger than the sum of its proper divisors (71951241).

155399127 is a wasteful number, since it uses less digits than its factorization.

155399127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75250.

The product of its digits is 85050, while the sum is 42.

The square root of 155399127 is about 12465.9186183771. The cubic root of 155399127 is about 537.6292122743.

The spelling of 155399127 in words is "one hundred fifty-five million, three hundred ninety-nine thousand, one hundred twenty-seven".