61045919 has 8 divisors (see below), whose sum is σ = 67398912. Its totient is φ = 54826840.

The previous prime is 61045889. The next prime is 61045921. The reversal of 61045919 is 91954016.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61045919 is a prime.

It is a super-2 number, since 2×61045919² = 7453208453109122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61045949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32519 + ... + 34344.

It is an arithmetic number, because the mean of its divisors is an integer number (8424864).

Almost surely, 2^61045919 is an apocalyptic number.

61045919 is a deficient number, since it is larger than the sum of its proper divisors (6352993).

61045919 is a wasteful number, since it uses less digits than its factorization.

61045919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66957.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 61045919 is about 7813.1887856368. The cubic root of 61045919 is about 393.7484694994.

The spelling of 61045919 in words is "sixty-one million, forty-five thousand, nine hundred nineteen".