61056307 has 4 divisors (see below), whose sum is σ = 65752960. Its totient is φ = 56359656.

The previous prime is 61056287. The next prime is 61056311. The reversal of 61056307 is 70365016.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61056307 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61056907) 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, 2348307 + ... + 2348332.

It is an arithmetic number, because the mean of its divisors is an integer number (16438240).

Almost surely, 2^61056307 is an apocalyptic number.

61056307 is a deficient number, since it is larger than the sum of its proper divisors (4696653).

61056307 is a wasteful number, since it uses less digits than its factorization.

61056307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696652.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 61056307 is about 7813.8535307491. The cubic root of 61056307 is about 393.7708025627.

The spelling of 61056307 in words is "sixty-one million, fifty-six thousand, three hundred seven".