61957741 has 4 divisors (see below), whose sum is σ = 65602332. Its totient is φ = 58313152.

The previous prime is 61957739. The next prime is 61957751. The reversal of 61957741 is 14775916.

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 44275716 + 17682025 = 6654^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 61957741 - 2¹ = 61957739 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61957694 and 61957703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61957751) 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, 1822270 + ... + 1822303.

It is an arithmetic number, because the mean of its divisors is an integer number (16400583).

Almost surely, 2^61957741 is an apocalyptic number.

It is an amenable number.

61957741 is a deficient number, since it is larger than the sum of its proper divisors (3644591).

61957741 is a wasteful number, since it uses less digits than its factorization.

61957741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644590.

The product of its digits is 52920, while the sum is 40.

The square root of 61957741 is about 7871.3239674149. The cubic root of 61957741 is about 395.6992176581.

The spelling of 61957741 in words is "sixty-one million, nine hundred fifty-seven thousand, seven hundred forty-one".