155497 has 4 divisors (see below), whose sum is σ = 156816. Its totient is φ = 154180.

The previous prime is 155473. The next prime is 155501. The reversal of 155497 is 794551.

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.

It is a cyclic number.

It is not a de Polignac number, because 155497 - 2¹¹ = 153449 is a prime.

It is a Duffinian number.

155497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (155797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (39204).

2¹⁵⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

155497 is a deficient number, since it is larger than the sum of its proper divisors (1319).

155497 is a wasteful number, since it uses less digits than its factorization.

155497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its digits is 6300, while the sum is 31.

The square root of 155497 is about 394.3310791708. The cubic root of 155497 is about 53.7742057912.

The spelling of 155497 in words is "one hundred fifty-five thousand, four hundred ninety-seven".