61052121 has 12 divisors (see below), whose sum is σ = 94970148. Its totient is φ = 37570464.

The previous prime is 61052081. The next prime is 61052137. The reversal of 61052121 is 12125016.

61052121 is a `hidden beast` number, since 610 + 52 + 1 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40449600 + 20602521 = 6360^2 + 4539^2 .

It is not a de Polignac number, because 61052121 - 2¹⁵ = 61019353 is a prime.

It is a super-2 number, since 2×61052121² = 7454722957197282, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61052094 and 61052103.

It is not an unprimeable number, because it can be changed into a prime (61052141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260790 + ... + 261023.

It is an arithmetic number, because the mean of its divisors is an integer number (7914179).

Almost surely, 2^61052121 is an apocalyptic number.

It is an amenable number.

61052121 is a deficient number, since it is larger than the sum of its proper divisors (33918027).

61052121 is a wasteful number, since it uses less digits than its factorization.

61052121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521832 (or 521829 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 61052121 is about 7813.5856685647. The cubic root of 61052121 is about 393.7618034255.

Adding to 61052121 its reverse (12125016), we get a palindrome (73177137).

The spelling of 61052121 in words is "sixty-one million, fifty-two thousand, one hundred twenty-one".