61799545 has 4 divisors (see below), whose sum is σ = 74159460. Its totient is φ = 49439632.

The previous prime is 61799503. The next prime is 61799561. The reversal of 61799545 is 54599716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10361961 + 51437584 = 3219^2 + 7172^2 .

It is a cyclic number.

It is not a de Polignac number, because 61799545 - 2⁷ = 61799417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61799495 and 61799504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6179950 + ... + 6179959.

It is an arithmetic number, because the mean of its divisors is an integer number (18539865).

Almost surely, 2^61799545 is an apocalyptic number.

It is an amenable number.

61799545 is a deficient number, since it is larger than the sum of its proper divisors (12359915).

61799545 is a wasteful number, since it uses less digits than its factorization.

61799545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12359914.

The product of its digits is 340200, while the sum is 46.

The square root of 61799545 is about 7861.2686635174. The cubic root of 61799545 is about 395.3621525065.

The spelling of 61799545 in words is "sixty-one million, seven hundred ninety-nine thousand, five hundred forty-five".