61540413 has 8 divisors (see below), whose sum is σ = 89513376. Its totient is φ = 37297200.

The previous prime is 61540403. The next prime is 61540417. The reversal of 61540413 is 31404516.

61540413 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 not a de Polignac number, because 61540413 - 2⁹ = 61539901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61540417) 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, 932398 + ... + 932463.

It is an arithmetic number, because the mean of its divisors is an integer number (11189172).

Almost surely, 2^61540413 is an apocalyptic number.

It is an amenable number.

61540413 is a deficient number, since it is larger than the sum of its proper divisors (27972963).

61540413 is a wasteful number, since it uses less digits than its factorization.

61540413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864875.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61540413 is about 7844.7697862971. The cubic root of 61540413 is about 394.8087799548.

Adding to 61540413 its reverse (31404516), we get a palindrome (92944929).

The spelling of 61540413 in words is "sixty-one million, five hundred forty thousand, four hundred thirteen".