1161351 has 8 divisors (see below), whose sum is σ = 1720560. Its totient is φ = 774216.

The previous prime is 1161343. The next prime is 1161371. The reversal of 1161351 is 1531611.

1161351 is a `hidden beast` number, since 1 + 1 + 613 + 51 = 666.

It is not a de Polignac number, because 1161351 - 2³ = 1161343 is a prime.

It is a super-2 number, since 2×1161351² = 2697472290402, which contains 22 as substring.

1161351 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161331) 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, 21480 + ... + 21533.

It is an arithmetic number, because the mean of its divisors is an integer number (215070).

2^1161351 is an apocalyptic number.

1161351 is a deficient number, since it is larger than the sum of its proper divisors (559209).

1161351 is an equidigital number, since it uses as much as digits as its factorization.

1161351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43022 (or 43016 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 1161351 is about 1077.6599649240. The cubic root of 1161351 is about 105.1125324130.

Adding to 1161351 its reverse (1531611), we get a palindrome (2692962).

It can be divided in two parts, 11613 and 51, that added together give a square (11664 = 108²).

The spelling of 1161351 in words is "one million, one hundred sixty-one thousand, three hundred fifty-one".