61081044 has 12 divisors (see below), whose sum is σ = 142522464. Its totient is φ = 20360344.

The previous prime is 61081037. The next prime is 61081049. The reversal of 61081044 is 44018016.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×61081044² = 7461787872259872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61081049) 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 3 ways as a sum of consecutive naturals, for example, 2545032 + ... + 2545055.

It is an arithmetic number, because the mean of its divisors is an integer number (11876872).

Almost surely, 2^61081044 is an apocalyptic number.

It is an amenable number.

61081044 is an abundant number, since it is smaller than the sum of its proper divisors (81441420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61081044 is a wasteful number, since it uses less digits than its factorization.

61081044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090094 (or 5090092 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 61081044 is about 7815.4362642146. The cubic root of 61081044 is about 393.8239742094.

The spelling of 61081044 in words is "sixty-one million, eighty-one thousand, forty-four".