61028851 has 4 divisors (see below), whose sum is σ = 65723392. Its totient is φ = 56334312.

The previous prime is 61028791. The next prime is 61028857. The reversal of 61028851 is 15882016.

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 61028851 - 2⁹ = 61028339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61028857) 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, 2347251 + ... + 2347276.

It is an arithmetic number, because the mean of its divisors is an integer number (16430848).

Almost surely, 2^61028851 is an apocalyptic number.

61028851 is a deficient number, since it is larger than the sum of its proper divisors (4694541).

61028851 is a wasteful number, since it uses less digits than its factorization.

61028851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694540.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 61028851 is about 7812.0964535776. The cubic root of 61028851 is about 393.7117696652.

The spelling of 61028851 in words is "sixty-one million, twenty-eight thousand, eight hundred fifty-one".