32540261 has 16 divisors (see below), whose sum is σ = 37631664. Its totient is φ = 27869184.

The previous prime is 32540243. The next prime is 32540273. The reversal of 32540261 is 16204523.

It can be written as a sum of positive squares in 8 ways, for example, as 1012036 + 31528225 = 1006^2 + 5615^2 .

It is a cyclic number.

It is not a de Polignac number, because 32540261 - 2²² = 28345957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32540161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15125 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (2351979).

Almost surely, 2^32540261 is an apocalyptic number.

It is an amenable number.

32540261 is a deficient number, since it is larger than the sum of its proper divisors (5091403).

32540261 is a wasteful number, since it uses less digits than its factorization.

32540261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 32540261 is about 5704.4071558752. The cubic root of 32540261 is about 319.2569380039.

Adding to 32540261 its reverse (16204523), we get a palindrome (48744784).

The spelling of 32540261 in words is "thirty-two million, five hundred forty thousand, two hundred sixty-one".