61117201 has 4 divisors (see below), whose sum is σ = 61136752. Its totient is φ = 61097652.

The previous prime is 61117171. The next prime is 61117241. The reversal of 61117201 is 10271116.

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 61117201 - 2⁷ = 61117073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61117241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3915 + ... + 11728.

It is an arithmetic number, because the mean of its divisors is an integer number (15284188).

Almost surely, 2^61117201 is an apocalyptic number.

It is an amenable number.

61117201 is a deficient number, since it is larger than the sum of its proper divisors (19551).

61117201 is a wasteful number, since it uses less digits than its factorization.

61117201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19550.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 61117201 is about 7817.7491006043. The cubic root of 61117201 is about 393.9016670784.

Adding to 61117201 its reverse (10271116), we get a palindrome (71388317).

The spelling of 61117201 in words is "sixty-one million, one hundred seventeen thousand, two hundred one".