61121097 has 12 divisors (see below), whose sum is σ = 92124864. Its totient is φ = 38975640.

The previous prime is 61121041. The next prime is 61121101. The reversal of 61121097 is 79012116.

It is not a de Polignac number, because 61121097 - 2¹¹ = 61119049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61121097.

It is not an unprimeable number, because it can be changed into a prime (61121297) 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 11 ways as a sum of consecutive naturals, for example, 147429 + ... + 147842.

It is an arithmetic number, because the mean of its divisors is an integer number (7677072).

Almost surely, 2^61121097 is an apocalyptic number.

It is an amenable number.

61121097 is a deficient number, since it is larger than the sum of its proper divisors (31003767).

61121097 is a wasteful number, since it uses less digits than its factorization.

61121097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295300 (or 295297 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 61121097 is about 7817.9982732155. The cubic root of 61121097 is about 393.9100368350.

Adding to 61121097 its sum of digits (27), we get a square (61121124 = 7818²).

It can be divided in two parts, 6112109 and 7, that added together give a palindrome (6112116).

The spelling of 61121097 in words is "sixty-one million, one hundred twenty-one thousand, ninety-seven".