61355593 has 4 divisors (see below), whose sum is σ = 66075268. Its totient is φ = 56635920.

The previous prime is 61355537. The next prime is 61355597. The reversal of 61355593 is 39555316.

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 3108169 + 58247424 = 1763^2 + 7632^2 .

It is a cyclic number.

It is not a de Polignac number, because 61355593 - 2¹³ = 61347401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61355597) 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, 2359818 + ... + 2359843.

It is an arithmetic number, because the mean of its divisors is an integer number (16518817).

Almost surely, 2^61355593 is an apocalyptic number.

It is an amenable number.

61355593 is a deficient number, since it is larger than the sum of its proper divisors (4719675).

61355593 is a wasteful number, since it uses less digits than its factorization.

61355593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719674.

The product of its digits is 60750, while the sum is 37.

The square root of 61355593 is about 7832.9811055562. The cubic root of 61355593 is about 394.4131498077.

The spelling of 61355593 in words is "sixty-one million, three hundred fifty-five thousand, five hundred ninety-three".