61124881 has 6 divisors (see below), whose sum is σ = 64511682. Its totient is φ = 57907440.

The previous prime is 61124857. The next prime is 61124893. The reversal of 61124881 is 18842116.

It can be written as a sum of positive squares in only one way, i.e., 60980481 + 144400 = 7809^2 + 380^2 .

It is not a de Polignac number, because 61124881 - 2⁵ = 61124849 is a prime.

It is a super-2 number, since 2×61124881² = 7472502154528322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61124821) 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 5 ways as a sum of consecutive naturals, for example, 84300 + ... + 85021.

It is an arithmetic number, because the mean of its divisors is an integer number (10751947).

Almost surely, 2^61124881 is an apocalyptic number.

It is an amenable number.

61124881 is a deficient number, since it is larger than the sum of its proper divisors (3386801).

61124881 is a wasteful number, since it uses less digits than its factorization.

61124881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169359 (or 169340 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 61124881 is about 7818.2402751514. The cubic root of 61124881 is about 393.9181656421.

Adding to 61124881 its reverse (18842116), we get a palindrome (79966997).

The spelling of 61124881 in words is "sixty-one million, one hundred twenty-four thousand, eight hundred eighty-one".