972555 has 16 divisors (see below), whose sum is σ = 1624320. Its totient is φ = 495968.

The previous prime is 972533. The next prime is 972557. The reversal of 972555 is 555279.

972555 = T₁₈₅ + T₁₈₆ + ... + T₂₂₉.

It is a cyclic number.

It is not a de Polignac number, because 972555 - 2⁷ = 972427 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (972557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (101520).

2⁹⁷²⁵⁵⁵ is an apocalyptic number.

972555 is a deficient number, since it is larger than the sum of its proper divisors (651765).

972555 is a wasteful number, since it uses less digits than its factorization.

972555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850.

The product of its digits is 15750, while the sum is 33.

The square root of 972555 is about 986.1820318785. The cubic root of 972555 is about 99.0766674765.

The spelling of 972555 in words is "nine hundred seventy-two thousand, five hundred fifty-five".