997580955 has 48 divisors (see below), whose sum is σ = 1937481984. Its totient is φ = 436201920.

The previous prime is 997580929. The next prime is 997580977. The reversal of 997580955 is 559085799.

It is not a de Polignac number, because 997580955 - 2⁵ = 997580923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997580895 and 997580904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12601 + ... + 46410.

It is an arithmetic number, because the mean of its divisors is an integer number (40364208).

Almost surely, 2^997580955 is an apocalyptic number.

997580955 is a deficient number, since it is larger than the sum of its proper divisors (939901029).

997580955 is a wasteful number, since it uses less digits than its factorization.

997580955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59056 (or 59049 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 57.

The square root of 997580955 is about 31584.5049826652. The cubic root of 997580955 is about 999.1930005938.

The spelling of 997580955 in words is "nine hundred ninety-seven million, five hundred eighty thousand, nine hundred fifty-five".