61010855 has 4 divisors (see below), whose sum is σ = 73213032. Its totient is φ = 48808680.

The previous prime is 61010849. The next prime is 61010857. The reversal of 61010855 is 55801016.

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

It is not a de Polignac number, because 61010855 - 2¹⁴ = 60994471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61010857) 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, 6101081 + ... + 6101090.

It is an arithmetic number, because the mean of its divisors is an integer number (18303258).

Almost surely, 2^61010855 is an apocalyptic number.

61010855 is a deficient number, since it is larger than the sum of its proper divisors (12202177).

61010855 is a wasteful number, since it uses less digits than its factorization.

61010855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12202176.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 61010855 is about 7810.9445651598. The cubic root of 61010855 is about 393.6730670220.

The spelling of 61010855 in words is "sixty-one million, ten thousand, eight hundred fifty-five".