32402261 has 2 divisors, whose sum is σ = 32402262. Its totient is φ = 32402260.

The previous prime is 32402233. The next prime is 32402273. The reversal of 32402261 is 16220423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 10956100 = 4631^2 + 3310^2 .

It is an emirp because it is prime and its reverse (16220423) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32402261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32402761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16201130 + 16201131.

It is an arithmetic number, because the mean of its divisors is an integer number (16201131).

Almost surely, 2^32402261 is an apocalyptic number.

It is an amenable number.

32402261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32402261 is an equidigital number, since it uses as much as digits as its factorization.

32402261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 32402261 is about 5692.2983934435. The cubic root of 32402261 is about 318.8049862336.

Adding to 32402261 its reverse (16220423), we get a palindrome (48622684).

The spelling of 32402261 in words is "thirty-two million, four hundred two thousand, two hundred sixty-one".