1155297854 has 8 divisors (see below), whose sum is σ = 1756686000. Its totient is φ = 569735856.

The previous prime is 1155297851. The next prime is 1155297859. The reversal of 1155297854 is 4587925511.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1155297799 and 1155297808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155297851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3956354 + ... + 3956645.

It is an arithmetic number, because the mean of its divisors is an integer number (219585750).

Almost surely, 2^1155297854 is an apocalyptic number.

1155297854 is a deficient number, since it is larger than the sum of its proper divisors (601388146).

1155297854 is an equidigital number, since it uses as much as digits as its factorization.

1155297854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913074.

The product of its digits is 504000, while the sum is 47.

The square root of 1155297854 is about 33989.6727551178. The cubic root of 1155297854 is about 1049.2959313240.

The spelling of 1155297854 in words is "one billion, one hundred fifty-five million, two hundred ninety-seven thousand, eight hundred fifty-four".