197455087 has 6 divisors (see below), whose sum is σ = 208394808. Its totient is φ = 187062372.

The previous prime is 197455081. The next prime is 197455117. The reversal of 197455087 is 780554791.

It is a happy number.

It is not a de Polignac number, because 197455087 - 2²⁷ = 63237359 is a prime.

It is a super-2 number, since 2×197455087² = 77977022764355138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197455081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273123 + ... + 273844.

It is an arithmetic number, because the mean of its divisors is an integer number (34732468).

Almost surely, 2^197455087 is an apocalyptic number.

197455087 is a deficient number, since it is larger than the sum of its proper divisors (10939721).

197455087 is an equidigital number, since it uses as much as digits as its factorization.

197455087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547005 (or 546986 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 197455087 is about 14051.8712988698. The cubic root of 197455087 is about 582.3124948014.

The spelling of 197455087 in words is "one hundred ninety-seven million, four hundred fifty-five thousand, eighty-seven".