973551 has 4 divisors (see below), whose sum is σ = 1298072. Its totient is φ = 649032.

The previous prime is 973547. The next prime is 973561. The reversal of 973551 is 155379.

It is a happy number.

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

It is not a de Polignac number, because 973551 - 2² = 973547 is a prime.

It is a D-number.

It is a Duffinian number.

973551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162256 + ... + 162261.

It is an arithmetic number, because the mean of its divisors is an integer number (324518).

2⁹⁷³⁵⁵¹ is an apocalyptic number.

973551 is a deficient number, since it is larger than the sum of its proper divisors (324521).

973551 is a wasteful number, since it uses less digits than its factorization.

973551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324520.

The product of its digits is 4725, while the sum is 30.

The square root of 973551 is about 986.6868804236. The cubic root of 973551 is about 99.1104776273.

The spelling of 973551 in words is "nine hundred seventy-three thousand, five hundred fifty-one".