61192561 has 4 divisors (see below), whose sum is σ = 62846452. Its totient is φ = 59538672.

The previous prime is 61192529. The next prime is 61192591. The reversal of 61192561 is 16529116.

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 53012961 + 8179600 = 7281^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 61192561 - 2⁵ = 61192529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61192501) 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, 826890 + ... + 826963.

It is an arithmetic number, because the mean of its divisors is an integer number (15711613).

Almost surely, 2^61192561 is an apocalyptic number.

It is an amenable number.

61192561 is a deficient number, since it is larger than the sum of its proper divisors (1653891).

61192561 is a wasteful number, since it uses less digits than its factorization.

61192561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653890.

The product of its digits is 3240, while the sum is 31.

The square root of 61192561 is about 7822.5674174148. The cubic root of 61192561 is about 394.0634995184.

The spelling of 61192561 in words is "sixty-one million, one hundred ninety-two thousand, five hundred sixty-one".