61034540 has 48 divisors (see below), whose sum is σ = 147292992. Its totient is φ = 20810496.

The previous prime is 61034507. The next prime is 61034551. The reversal of 61034540 is 4543016.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26474 + ... + 28686.

It is an arithmetic number, because the mean of its divisors is an integer number (3068604).

Almost surely, 2^61034540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61034540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73646496).

61034540 is an abundant number, since it is smaller than the sum of its proper divisors (86258452).

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

61034540 is a wasteful number, since it uses less digits than its factorization.

61034540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2424 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61034540 is about 7812.4605599004. The cubic root of 61034540 is about 393.7240029867.

Adding to 61034540 its reverse (4543016), we get a palindrome (65577556).

The spelling of 61034540 in words is "sixty-one million, thirty-four thousand, five hundred forty".