1163551 has 2 divisors, whose sum is σ = 1163552. Its totient is φ = 1163550.

The previous prime is 1163543. The next prime is 1163557. The reversal of 1163551 is 1553611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163551 - 2³ = 1163543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581775 + 581776.

It is an arithmetic number, because the mean of its divisors is an integer number (581776).

2^1163551 is an apocalyptic number.

1163551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163551 is an equidigital number, since it uses as much as digits as its factorization.

1163551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 22.

The square root of 1163551 is about 1078.6802121111. The cubic root of 1163551 is about 105.1788636955.

The spelling of 1163551 in words is "one million, one hundred sixty-three thousand, five hundred fifty-one".