155457 has 12 divisors (see below), whose sum is σ = 234624. Its totient is φ = 99000.

The previous prime is 155453. The next prime is 155461. The reversal of 155457 is 754551.

155457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155453) and next prime (155461).

It is not a de Polignac number, because 155457 - 2² = 155453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155457.

It is not an unprimeable number, because it can be changed into a prime (155453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169 + ... + 582.

It is an arithmetic number, because the mean of its divisors is an integer number (19552).

2¹⁵⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

155457 is a deficient number, since it is larger than the sum of its proper divisors (79167).

155457 is a wasteful number, since it uses less digits than its factorization.

155457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 777 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 155457 is about 394.2803571065. The cubic root of 155457 is about 53.7695944425.

The spelling of 155457 in words is "one hundred fifty-five thousand, four hundred fifty-seven".