1534661 has 2 divisors, whose sum is σ = 1534662. Its totient is φ = 1534660.

The previous prime is 1534657. The next prime is 1534667. The reversal of 1534661 is 1664351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 168100 = 1169^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534661 - 2² = 1534657 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₁₁₆₅₈₅ and since 1534661 and 116585 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1534661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767330 + 767331.

It is an arithmetic number, because the mean of its divisors is an integer number (767331).

2^1534661 is an apocalyptic number.

It is an amenable number.

1534661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534661 is an equidigital number, since it uses as much as digits as its factorization.

1534661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 1534661 is about 1238.8143525161. The cubic root of 1534661 is about 115.3464285828.

It can be divided in two parts, 15 and 34661, that multiplied together give a palindrome (519915).

The spelling of 1534661 in words is "one million, five hundred thirty-four thousand, six hundred sixty-one".