197455445 has 8 divisors (see below), whose sum is σ = 258487200. Its totient is φ = 143603920.

The previous prime is 197455393. The next prime is 197455463. The reversal of 197455445 is 544554791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-197455445 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197455396 and 197455405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1794995 + ... + 1795104.

It is an arithmetic number, because the mean of its divisors is an integer number (32310900).

Almost surely, 2^197455445 is an apocalyptic number.

It is an amenable number.

197455445 is a deficient number, since it is larger than the sum of its proper divisors (61031755).

197455445 is a wasteful number, since it uses less digits than its factorization.

197455445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590115.

The product of its digits is 504000, while the sum is 44.

The square root of 197455445 is about 14051.8840373809. The cubic root of 197455445 is about 582.3128467257.

The spelling of 197455445 in words is "one hundred ninety-seven million, four hundred fifty-five thousand, four hundred forty-five".