61599545 has 8 divisors (see below), whose sum is σ = 84479424. Its totient is φ = 42239664.

The previous prime is 61599541. The next prime is 61599557. The reversal of 61599545 is 54599516.

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 61599545 - 2² = 61599541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61599496 and 61599505.

It is not an unprimeable number, because it can be changed into a prime (61599541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879959 + ... + 880028.

It is an arithmetic number, because the mean of its divisors is an integer number (10559928).

Almost surely, 2^61599545 is an apocalyptic number.

It is an amenable number.

61599545 is a deficient number, since it is larger than the sum of its proper divisors (22879879).

61599545 is a wasteful number, since it uses less digits than its factorization.

61599545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759999.

The product of its digits is 243000, while the sum is 44.

The square root of 61599545 is about 7848.5377619019. The cubic root of 61599545 is about 394.9351920594.

The spelling of 61599545 in words is "sixty-one million, five hundred ninety-nine thousand, five hundred forty-five".