1117531477 has 2 divisors, whose sum is σ = 1117531478. Its totient is φ = 1117531476.

The previous prime is 1117531469. The next prime is 1117531483. The reversal of 1117531477 is 7741357111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873734481 + 243796996 = 29559^2 + 15614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117531477 - 2³ = 1117531469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117531487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558765738 + 558765739.

It is an arithmetic number, because the mean of its divisors is an integer number (558765739).

Almost surely, 2^1117531477 is an apocalyptic number.

It is an amenable number.

1117531477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117531477 is an equidigital number, since it uses as much as digits as its factorization.

1117531477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20580, while the sum is 37.

The square root of 1117531477 is about 33429.5001009587. The cubic root of 1117531477 is about 1037.7352953920.

Adding to 1117531477 its reverse (7741357111), we get a palindrome (8858888588).

The spelling of 1117531477 in words is "one billion, one hundred seventeen million, five hundred thirty-one thousand, four hundred seventy-seven".