972897550 has 12 divisors (see below), whose sum is σ = 1809589536. Its totient is φ = 389159000.

The previous prime is 972897533. The next prime is 972897581. The reversal of 972897550 is 55798279.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9728926 + ... + 9729025.

It is an arithmetic number, because the mean of its divisors is an integer number (150799128).

Almost surely, 2^972897550 is an apocalyptic number.

972897550 is a deficient number, since it is larger than the sum of its proper divisors (836691986).

972897550 is a wasteful number, since it uses less digits than its factorization.

972897550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457963 (or 19457958 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 52.

The square root of 972897550 is about 31191.3056796281. The cubic root of 972897550 is about 990.8829825958.

The spelling of 972897550 in words is "nine hundred seventy-two million, eight hundred ninety-seven thousand, five hundred fifty".