197077550 has 12 divisors (see below), whose sum is σ = 366564336. Its totient is φ = 78831000.

The previous prime is 197077513. The next prime is 197077561. The reversal of 197077550 is 55770791.

It is a junction number, because it is equal to n+sod(n) for n = 197077498 and 197077507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1970726 + ... + 1970825.

It is an arithmetic number, because the mean of its divisors is an integer number (30547028).

Almost surely, 2^197077550 is an apocalyptic number.

197077550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197077550 is a deficient number, since it is larger than the sum of its proper divisors (169486786).

197077550 is a wasteful number, since it uses less digits than its factorization.

197077550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941563 (or 3941558 counting only the distinct ones).

The product of its (nonzero) digits is 77175, while the sum is 41.

The square root of 197077550 is about 14038.4311801568. The cubic root of 197077550 is about 581.9411280263.

The spelling of 197077550 in words is "one hundred ninety-seven million, seventy-seven thousand, five hundred fifty".