1155286497 has 4 divisors (see below), whose sum is σ = 1540382000. Its totient is φ = 770190996.

The previous prime is 1155286487. The next prime is 1155286499. The reversal of 1155286497 is 7946825511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1155286497 - 2¹⁴ = 1155270113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155286499) 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, 192547747 + ... + 192547752.

It is an arithmetic number, because the mean of its divisors is an integer number (385095500).

Almost surely, 2^1155286497 is an apocalyptic number.

It is an amenable number.

1155286497 is a deficient number, since it is larger than the sum of its proper divisors (385095503).

1155286497 is an equidigital number, since it uses as much as digits as its factorization.

1155286497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385095502.

The product of its digits is 604800, while the sum is 48.

The square root of 1155286497 is about 33989.5056892565. The cubic root of 1155286497 is about 1049.2924929919.

The spelling of 1155286497 in words is "one billion, one hundred fifty-five million, two hundred eighty-six thousand, four hundred ninety-seven".