61632271 has 4 divisors (see below), whose sum is σ = 61659000. Its totient is φ = 61605544.

The previous prime is 61632251. The next prime is 61632281. The reversal of 61632271 is 17223616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61632271 - 2⁵ = 61632239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61632251) 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, 9541 + ... + 14638.

It is an arithmetic number, because the mean of its divisors is an integer number (15414750).

Almost surely, 2^61632271 is an apocalyptic number.

61632271 is a deficient number, since it is larger than the sum of its proper divisors (26729).

61632271 is a wasteful number, since it uses less digits than its factorization.

61632271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26728.

The product of its digits is 3024, while the sum is 28.

The square root of 61632271 is about 7850.6223320193. The cubic root of 61632271 is about 395.0051187715.

Adding to 61632271 its reverse (17223616), we get a palindrome (78855887).

The spelling of 61632271 in words is "sixty-one million, six hundred thirty-two thousand, two hundred seventy-one".