56102861 has 2 divisors, whose sum is σ = 56102862. Its totient is φ = 56102860.

The previous prime is 56102857. The next prime is 56102863. The reversal of 56102861 is 16820165.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 18966025 = 6094^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 56102861 - 2² = 56102857 is a prime.

Together with 56102863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56102863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28051430 + 28051431.

It is an arithmetic number, because the mean of its divisors is an integer number (28051431).

Almost surely, 2^56102861 is an apocalyptic number.

It is an amenable number.

56102861 is a deficient number, since it is larger than the sum of its proper divisors (1).

56102861 is an equidigital number, since it uses as much as digits as its factorization.

56102861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 56102861 is about 7490.1843101488. The cubic root of 56102861 is about 382.8203385350.

The spelling of 56102861 in words is "fifty-six million, one hundred two thousand, eight hundred sixty-one".