1151263 has 4 divisors (see below), whose sum is σ = 1156320. Its totient is φ = 1146208.

The previous prime is 1151251. The next prime is 1151287. The reversal of 1151263 is 3621511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3621511 = 23 ⋅157457.

It is a cyclic number.

It is not a de Polignac number, because 1151263 - 2¹³ = 1143071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151203) 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, 2170 + ... + 2647.

It is an arithmetic number, because the mean of its divisors is an integer number (289080).

2^1151263 is an apocalyptic number.

1151263 is a deficient number, since it is larger than the sum of its proper divisors (5057).

1151263 is an equidigital number, since it uses as much as digits as its factorization.

1151263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056.

The product of its digits is 180, while the sum is 19.

The square root of 1151263 is about 1072.9692446664. The cubic root of 1151263 is about 104.8072958326.

Adding to 1151263 its reverse (3621511), we get a palindrome (4772774).

It can be divided in two parts, 115 and 1263, that added together give a triangular number (1378 = T₅₂).

The spelling of 1151263 in words is "one million, one hundred fifty-one thousand, two hundred sixty-three".