61332641 has 4 divisors (see below), whose sum is σ = 61450884. Its totient is φ = 61214400.

The previous prime is 61332631. The next prime is 61332701. The reversal of 61332641 is 14623316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23078416 + 38254225 = 4804^2 + 6185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61332641 is a prime.

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 61332641.

It is not an unprimeable number, because it can be changed into a prime (61332631) 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, 58340 + ... + 59381.

It is an arithmetic number, because the mean of its divisors is an integer number (15362721).

Almost surely, 2^61332641 is an apocalyptic number.

It is an amenable number.

61332641 is a deficient number, since it is larger than the sum of its proper divisors (118243).

61332641 is a wasteful number, since it uses less digits than its factorization.

61332641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118242.

The product of its digits is 2592, while the sum is 26.

The square root of 61332641 is about 7831.5158813604. The cubic root of 61332641 is about 394.3639627697.

Adding to 61332641 its reverse (14623316), we get a palindrome (75955957).

The spelling of 61332641 in words is "sixty-one million, three hundred thirty-two thousand, six hundred forty-one".