61045913 has 4 divisors (see below), whose sum is σ = 63015168. Its totient is φ = 59076660.

The previous prime is 61045889. The next prime is 61045921. The reversal of 61045913 is 31954016.

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 a cyclic number.

It is not a de Polignac number, because 61045913 - 2⁶ = 61045849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61045973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984581 + ... + 984642.

It is an arithmetic number, because the mean of its divisors is an integer number (15753792).

Almost surely, 2^61045913 is an apocalyptic number.

It is an amenable number.

61045913 is a deficient number, since it is larger than the sum of its proper divisors (1969255).

61045913 is a wasteful number, since it uses less digits than its factorization.

61045913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969254.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61045913 is about 7813.1884016706. The cubic root of 61045913 is about 393.7484565993.

Adding to 61045913 its reverse (31954016), we get a palindrome (92999929).

The spelling of 61045913 in words is "sixty-one million, forty-five thousand, nine hundred thirteen".