55466857 has 2 divisors, whose sum is σ = 55466858. Its totient is φ = 55466856.

The previous prime is 55466813. The next prime is 55466893. The reversal of 55466857 is 75866455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48385936 + 7080921 = 6956^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 55466857 - 2¹¹ = 55464809 is a prime.

It is not a weakly prime, because it can be changed into another prime (55466897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27733428 + 27733429.

It is an arithmetic number, because the mean of its divisors is an integer number (27733429).

Almost surely, 2^55466857 is an apocalyptic number.

It is an amenable number.

55466857 is a deficient number, since it is larger than the sum of its proper divisors (1).

55466857 is an equidigital number, since it uses as much as digits as its factorization.

55466857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 46.

The square root of 55466857 is about 7447.6074681739. The cubic root of 55466857 is about 381.3682370172.

It can be divided in two parts, 5546 and 6857, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 55466857 in words is "fifty-five million, four hundred sixty-six thousand, eight hundred fifty-seven".