32551361 has 4 divisors (see below), whose sum is σ = 32563332. Its totient is φ = 32539392.

The previous prime is 32551331. The next prime is 32551367. The reversal of 32551361 is 16315523.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16315523 = 7 ⋅2330789.

It can be written as a sum of positive squares in 2 ways, for example, as 31013761 + 1537600 = 5569^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 32551361 - 2¹⁴ = 32534977 is a prime.

It is a super-2 number, since 2×32551361² = 2119182205904642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32551361.

It is not an unprimeable number, because it can be changed into a prime (32551367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 8073.

It is an arithmetic number, because the mean of its divisors is an integer number (8140833).

Almost surely, 2^32551361 is an apocalyptic number.

It is an amenable number.

32551361 is a deficient number, since it is larger than the sum of its proper divisors (11971).

32551361 is an equidigital number, since it uses as much as digits as its factorization.

32551361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970.

The product of its digits is 2700, while the sum is 26.

The square root of 32551361 is about 5705.3800048726. The cubic root of 32551361 is about 319.2932350816.

Adding to 32551361 its reverse (16315523), we get a palindrome (48866884).

The spelling of 32551361 in words is "thirty-two million, five hundred fifty-one thousand, three hundred sixty-one".