155750117 has 4 divisors (see below), whose sum is σ = 155942976. Its totient is φ = 155557260.

The previous prime is 155750071. The next prime is 155750129. The reversal of 155750117 is 711057551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 711057551 = 211 ⋅3369941.

It is a cyclic number.

It is not a de Polignac number, because 155750117 - 2⁶ = 155750053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155750137) 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 in 3 ways as a sum of consecutive naturals, for example, 95213 + ... + 96834.

It is an arithmetic number, because the mean of its divisors is an integer number (38985744).

Almost surely, 2^155750117 is an apocalyptic number.

It is an amenable number.

155750117 is a deficient number, since it is larger than the sum of its proper divisors (192859).

155750117 is an equidigital number, since it uses as much as digits as its factorization.

155750117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192858.

The product of its (nonzero) digits is 6125, while the sum is 32.

The square root of 155750117 is about 12479.9886618538. The cubic root of 155750117 is about 538.0336774061.

The spelling of 155750117 in words is "one hundred fifty-five million, seven hundred fifty thousand, one hundred seventeen".