197315457 has 8 divisors (see below), whose sum is σ = 263395584. Its totient is φ = 131389488.

The previous prime is 197315453. The next prime is 197315471. The reversal of 197315457 is 754513791.

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

It is not a de Polignac number, because 197315457 - 2² = 197315453 is a prime.

It is a super-2 number, since 2×197315457² = 77866779142237698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197315453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35518 + ... + 40695.

It is an arithmetic number, because the mean of its divisors is an integer number (32924448).

Almost surely, 2^197315457 is an apocalyptic number.

It is an amenable number.

197315457 is a deficient number, since it is larger than the sum of its proper divisors (66080127).

197315457 is an equidigital number, since it uses as much as digits as its factorization.

197315457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77079.

The product of its digits is 132300, while the sum is 42.

The square root of 197315457 is about 14046.9020427993. The cubic root of 197315457 is about 582.1752020326.

The spelling of 197315457 in words is "one hundred ninety-seven million, three hundred fifteen thousand, four hundred fifty-seven".