1151523 has 8 divisors (see below), whose sum is σ = 1706000. Its totient is φ = 767664.

The previous prime is 1151519. The next prime is 1151537. The reversal of 1151523 is 3251511.

It is not a de Polignac number, because 1151523 - 2² = 1151519 is a prime.

It is a Duffinian number.

1151523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1151496 and 1151505.

It is not an unprimeable number, because it can be changed into a prime (1151593) 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, 21298 + ... + 21351.

It is an arithmetic number, because the mean of its divisors is an integer number (213250).

2^1151523 is an apocalyptic number.

1151523 is a deficient number, since it is larger than the sum of its proper divisors (554477).

1151523 is an equidigital number, since it uses as much as digits as its factorization.

1151523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42658 (or 42652 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1151523 is about 1073.0903969377. The cubic root of 1151523 is about 104.8151850945.

The spelling of 1151523 in words is "one million, one hundred fifty-one thousand, five hundred twenty-three".