1131547 has 2 divisors, whose sum is σ = 1131548. Its totient is φ = 1131546.

The previous prime is 1131523. The next prime is 1131553. The reversal of 1131547 is 7451311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131547 - 2⁷ = 1131419 is a prime.

It is a super-2 number, since 2×1131547² = 2560797226418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1131047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565773 + 565774.

It is an arithmetic number, because the mean of its divisors is an integer number (565774).

2^1131547 is an apocalyptic number.

1131547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131547 is an equidigital number, since it uses as much as digits as its factorization.

1131547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 22.

The square root of 1131547 is about 1063.7419799933. The cubic root of 1131547 is about 104.2055537655.

Adding to 1131547 its reverse (7451311), we get a palindrome (8582858).

The spelling of 1131547 in words is "one million, one hundred thirty-one thousand, five hundred forty-seven".