61600545 has 24 divisors (see below), whose sum is σ = 108529512. Its totient is φ = 32313600.

The previous prime is 61600541. The next prime is 61600547. The reversal of 61600545 is 54500616.

It is a happy number.

61600545 is a `hidden beast` number, since 6 + 1 + 600 + 54 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4809249 + 56791296 = 2193^2 + 7536^2 .

It is not a de Polignac number, because 61600545 - 2² = 61600541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61600541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8476 + ... + 13965.

It is an arithmetic number, because the mean of its divisors is an integer number (4522063).

Almost surely, 2^61600545 is an apocalyptic number.

It is an amenable number.

61600545 is a deficient number, since it is larger than the sum of its proper divisors (46928967).

61600545 is a wasteful number, since it uses less digits than its factorization.

61600545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22513 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 61600545 is about 7848.6014677776. The cubic root of 61600545 is about 394.9373291588.

It can be divided in two parts, 616005 and 45, that multiplied together give a square (27720225 = 5265²).

The spelling of 61600545 in words is "sixty-one million, six hundred thousand, five hundred forty-five".