61651041 has 4 divisors (see below), whose sum is σ = 82201392. Its totient is φ = 41100692.

The previous prime is 61651039. The next prime is 61651049. The reversal of 61651041 is 14015616.

61651041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61651041 - 2¹ = 61651039 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61651049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10275171 + ... + 10275176.

It is an arithmetic number, because the mean of its divisors is an integer number (20550348).

Almost surely, 2^61651041 is an apocalyptic number.

It is an amenable number.

61651041 is a deficient number, since it is larger than the sum of its proper divisors (20550351).

61651041 is a wasteful number, since it uses less digits than its factorization.

61651041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550350.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61651041 is about 7851.8176876441. The cubic root of 61651041 is about 395.0452140734.

Adding to 61651041 its reverse (14015616), we get a palindrome (75666657).

The spelling of 61651041 in words is "sixty-one million, six hundred fifty-one thousand, forty-one".