61055807 has 2 divisors, whose sum is σ = 61055808. Its totient is φ = 61055806.

The previous prime is 61055803. The next prime is 61055843. The reversal of 61055807 is 70855016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61055807 - 2² = 61055803 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61055801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527903 + 30527904.

It is an arithmetic number, because the mean of its divisors is an integer number (30527904).

Almost surely, 2^61055807 is an apocalyptic number.

61055807 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055807 is an equidigital number, since it uses as much as digits as its factorization.

61055807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 61055807 is about 7813.8215362267. The cubic root of 61055807 is about 393.7697276754.

The spelling of 61055807 in words is "sixty-one million, fifty-five thousand, eight hundred seven".