997154 has 4 divisors (see below), whose sum is σ = 1495734. Its totient is φ = 498576.

The previous prime is 997153. The next prime is 997163. The reversal of 997154 is 451799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 332929 = 815^2 + 577^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997154.

It is not an unprimeable number, because it can be changed into a prime (997151) 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 as a sum of consecutive naturals, namely, 249287 + ... + 249290.

2⁹⁹⁷¹⁵⁴ is an apocalyptic number.

997154 is a deficient number, since it is larger than the sum of its proper divisors (498580).

997154 is a wasteful number, since it uses less digits than its factorization.

997154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498579.

The product of its digits is 11340, while the sum is 35.

The square root of 997154 is about 998.5759860922. The cubic root of 997154 is about 99.9050431939.

The spelling of 997154 in words is "nine hundred ninety-seven thousand, one hundred fifty-four".