155693157 has 16 divisors (see below), whose sum is σ = 220243392. Its totient is φ = 97493760.

The previous prime is 155693137. The next prime is 155693183. The reversal of 155693157 is 751396551.

It is not a de Polignac number, because 155693157 - 2⁷ = 155693029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155693137) 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 15 ways as a sum of consecutive naturals, for example, 25107 + ... + 30687.

It is an arithmetic number, because the mean of its divisors is an integer number (13765212).

Almost surely, 2^155693157 is an apocalyptic number.

155693157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

155693157 is a deficient number, since it is larger than the sum of its proper divisors (64550235).

155693157 is a wasteful number, since it uses less digits than its factorization.

155693157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148.

The product of its digits is 141750, while the sum is 42.

The square root of 155693157 is about 12477.7063998156. The cubic root of 155693157 is about 537.9680805908.

The spelling of 155693157 in words is "one hundred fifty-five million, six hundred ninety-three thousand, one hundred fifty-seven".