972500055773 has 4 divisors (see below), whose sum is σ = 972513779388. Its totient is φ = 972486332160.

The previous prime is 972500055763. The next prime is 972500055809. The reversal of 972500055773 is 377550005279.

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

It can be written as a sum of positive squares in 2 ways, for example, as 876745704409 + 95754351364 = 936347^2 + 309442^2 .

It is a cyclic number.

It is not a de Polignac number, because 972500055773 - 2⁴ = 972500055757 is a prime.

It is a super-2 number, since 2×972500055773² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972500055763) 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, 6754958 + ... + 6897423.

It is an arithmetic number, because the mean of its divisors is an integer number (243128444847).

Almost surely, 2^972500055773 is an apocalyptic number.

It is an amenable number.

972500055773 is a deficient number, since it is larger than the sum of its proper divisors (13723615).

972500055773 is a wasteful number, since it uses less digits than its factorization.

972500055773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13723614.

The product of its (nonzero) digits is 2315250, while the sum is 50.

The spelling of 972500055773 in words is "nine hundred seventy-two billion, five hundred million, fifty-five thousand, seven hundred seventy-three".