197157045 has 16 divisors (see below), whose sum is σ = 315628992. Its totient is φ = 105091200.

The previous prime is 197157043. The next prime is 197157047. The reversal of 197157045 is 540751791.

It is an interprime number because it is at equal distance from previous prime (197157043) and next prime (197157047).

It is not a de Polignac number, because 197157045 - 2¹ = 197157043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197156994 and 197157012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197157043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42070 + ... + 46520.

It is an arithmetic number, because the mean of its divisors is an integer number (19726812).

Almost surely, 2^197157045 is an apocalyptic number.

197157045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197157045 is a deficient number, since it is larger than the sum of its proper divisors (118471947).

197157045 is a wasteful number, since it uses less digits than its factorization.

197157045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412.

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 197157045 is about 14041.2622295861. The cubic root of 197157045 is about 582.0193632036.

The spelling of 197157045 in words is "one hundred ninety-seven million, one hundred fifty-seven thousand, forty-five".