1148531 has 4 divisors (see below), whose sum is σ = 1209000. Its totient is φ = 1088064.

The previous prime is 1148527. The next prime is 1148549. The reversal of 1148531 is 1358411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1148531 - 2² = 1148527 is a prime.

It is a super-2 number, since 2×1148531² = 2638246915922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148497 and 1148506.

It is not an unprimeable number, because it can be changed into a prime (1148501) 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, 30206 + ... + 30243.

It is an arithmetic number, because the mean of its divisors is an integer number (302250).

2^1148531 is an apocalyptic number.

1148531 is a deficient number, since it is larger than the sum of its proper divisors (60469).

1148531 is an equidigital number, since it uses as much as digits as its factorization.

1148531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60468.

The product of its digits is 480, while the sum is 23.

The square root of 1148531 is about 1071.6953858257. The cubic root of 1148531 is about 104.7243259912.

The spelling of 1148531 in words is "one million, one hundred forty-eight thousand, five hundred thirty-one".