61240513 has 8 divisors (see below), whose sum is σ = 65631168. Its totient is φ = 56993904.

The previous prime is 61240453. The next prime is 61240537. The reversal of 61240513 is 31504216.

61240513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61240513 - 2¹³ = 61232321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61240583) 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 7 ways as a sum of consecutive naturals, for example, 35131 + ... + 36832.

It is an arithmetic number, because the mean of its divisors is an integer number (8203896).

Almost surely, 2^61240513 is an apocalyptic number.

It is an amenable number.

61240513 is a deficient number, since it is larger than the sum of its proper divisors (4390655).

61240513 is a wasteful number, since it uses less digits than its factorization.

61240513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72023.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 61240513 is about 7825.6317955805. The cubic root of 61240513 is about 394.1664052689.

Adding to 61240513 its reverse (31504216), we get a palindrome (92744729).

The spelling of 61240513 in words is "sixty-one million, two hundred forty thousand, five hundred thirteen".