61349081 has 4 divisors (see below), whose sum is σ = 64578000. Its totient is φ = 58120164.

The previous prime is 61349077. The next prime is 61349083. The reversal of 61349081 is 18094316.

It is a happy number.

61349081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61349081 - 2² = 61349077 is a prime.

It is a super-2 number, since 2×61349081² = 7527419479089122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61349083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614431 + ... + 1614468.

It is an arithmetic number, because the mean of its divisors is an integer number (16144500).

Almost surely, 2^61349081 is an apocalyptic number.

It is an amenable number.

61349081 is a deficient number, since it is larger than the sum of its proper divisors (3228919).

61349081 is a wasteful number, since it uses less digits than its factorization.

61349081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228918.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 61349081 is about 7832.5654162605. The cubic root of 61349081 is about 394.3991955824.

It can be divided in two parts, 613 and 49081, that added together give a palindrome (49694).

The spelling of 61349081 in words is "sixty-one million, three hundred forty-nine thousand, eighty-one".