61051747 has 4 divisors (see below), whose sum is σ = 62540856. Its totient is φ = 59562640.

The previous prime is 61051717. The next prime is 61051751. The reversal of 61051747 is 74715016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61051747 - 2⁷ = 61051619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61051717) 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, 744493 + ... + 744574.

It is an arithmetic number, because the mean of its divisors is an integer number (15635214).

Almost surely, 2^61051747 is an apocalyptic number.

61051747 is a deficient number, since it is larger than the sum of its proper divisors (1489109).

61051747 is a wasteful number, since it uses less digits than its factorization.

61051747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489108.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 61051747 is about 7813.5617358539. The cubic root of 61051747 is about 393.7609993736.

The spelling of 61051747 in words is "sixty-one million, fifty-one thousand, seven hundred forty-seven".