59187661 has 4 divisors (see below), whose sum is σ = 63740572. Its totient is φ = 54634752.

The previous prime is 59187643. The next prime is 59187701. The reversal of 59187661 is 16678195.

It is a happy number.

59187661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17015625 + 42172036 = 4125^2 + 6494^2 .

It is a cyclic number.

It is not a de Polignac number, because 59187661 - 2²³ = 50799053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59187631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276436 + ... + 2276461.

It is an arithmetic number, because the mean of its divisors is an integer number (15935143).

Almost surely, 2^59187661 is an apocalyptic number.

It is an amenable number.

59187661 is a deficient number, since it is larger than the sum of its proper divisors (4552911).

59187661 is a wasteful number, since it uses less digits than its factorization.

59187661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552910.

The product of its digits is 90720, while the sum is 43.

The square root of 59187661 is about 7693.3517403015. The cubic root of 59187661 is about 389.7119525475.

The spelling of 59187661 in words is "fifty-nine million, one hundred eighty-seven thousand, six hundred sixty-one".