1172053897 has 8 divisors (see below), whose sum is σ = 1344704256. Its totient is φ = 1000707072.

The previous prime is 1172053877. The next prime is 1172053901. The reversal of 1172053897 is 7983502711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172053897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1172053837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323953 + ... + 327550.

It is an arithmetic number, because the mean of its divisors is an integer number (168088032).

Almost surely, 2^1172053897 is an apocalyptic number.

It is an amenable number.

1172053897 is a deficient number, since it is larger than the sum of its proper divisors (172650359).

1172053897 is an equidigital number, since it uses as much as digits as its factorization.

1172053897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651767.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1172053897 is about 34235.2727022876. The cubic root of 1172053897 is about 1054.3444778125.

The spelling of 1172053897 in words is "one billion, one hundred seventy-two million, fifty-three thousand, eight hundred ninety-seven".