61111097 has 8 divisors (see below), whose sum is σ = 61578240. Its totient is φ = 60646320.

The previous prime is 61111031. The next prime is 61111103. The reversal of 61111097 is 79011116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61111097 - 2¹⁴ = 61094713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61111697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144947 + ... + 145367.

It is an arithmetic number, because the mean of its divisors is an integer number (7697280).

Almost surely, 2^61111097 is an apocalyptic number.

It is an amenable number.

61111097 is a deficient number, since it is larger than the sum of its proper divisors (467143).

61111097 is a wasteful number, since it uses less digits than its factorization.

61111097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 61111097 is about 7817.3586971560. The cubic root of 61111097 is about 393.8885531717. Note that the first 3 decimals are identical.

It can be divided in two parts, 6111109 and 7, that added together give a palindrome (6111116).

The spelling of 61111097 in words is "sixty-one million, one hundred eleven thousand, ninety-seven".