55891751 has 2 divisors, whose sum is σ = 55891752. Its totient is φ = 55891750.

The previous prime is 55891747. The next prime is 55891783. The reversal of 55891751 is 15719855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55891751 - 2² = 55891747 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55891699 and 55891708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55891741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27945875 + 27945876.

It is an arithmetic number, because the mean of its divisors is an integer number (27945876).

Almost surely, 2^55891751 is an apocalyptic number.

55891751 is a deficient number, since it is larger than the sum of its proper divisors (1).

55891751 is an equidigital number, since it uses as much as digits as its factorization.

55891751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 41.

The square root of 55891751 is about 7476.0785843917. The cubic root of 55891751 is about 382.3395622018.

The spelling of 55891751 in words is "fifty-five million, eight hundred ninety-one thousand, seven hundred fifty-one".