61505741 has 4 divisors (see below), whose sum is σ = 67097184. Its totient is φ = 55914300.

The previous prime is 61505707. The next prime is 61505753. The reversal of 61505741 is 14750516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61505741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61505701) 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, 2795705 + ... + 2795726.

It is an arithmetic number, because the mean of its divisors is an integer number (16774296).

Almost surely, 2^61505741 is an apocalyptic number.

It is an amenable number.

61505741 is a deficient number, since it is larger than the sum of its proper divisors (5591443).

61505741 is a wasteful number, since it uses less digits than its factorization.

61505741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591442.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 61505741 is about 7842.5595949282. The cubic root of 61505741 is about 394.7346206562.

The spelling of 61505741 in words is "sixty-one million, five hundred five thousand, seven hundred forty-one".