61521122 has 32 divisors (see below), whose sum is σ = 103723200. Its totient is φ = 27171648.

The previous prime is 61521101. The next prime is 61521127. The reversal of 61521122 is 22112516.

It is a junction number, because it is equal to n+sod(n) for n = 61521094 and 61521103.

It is not an unprimeable number, because it can be changed into a prime (61521127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104513 + ... + 105099.

It is an arithmetic number, because the mean of its divisors is an integer number (3241350).

Almost surely, 2^61521122 is an apocalyptic number.

61521122 is a deficient number, since it is larger than the sum of its proper divisors (42202078).

61521122 is a wasteful number, since it uses less digits than its factorization.

61521122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its digits is 240, while the sum is 20.

The square root of 61521122 is about 7843.5401446031. The cubic root of 61521122 is about 394.7675222307.

Adding to 61521122 its reverse (22112516), we get a palindrome (83633638).

The spelling of 61521122 in words is "sixty-one million, five hundred twenty-one thousand, one hundred twenty-two".