55016257 has 2 divisors, whose sum is σ = 55016258. Its totient is φ = 55016256.

The previous prime is 55016251. The next prime is 55016287. The reversal of 55016257 is 75261055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 389376 = 7391^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 55016257 - 2²³ = 46627649 is a prime.

It is not a weakly prime, because it can be changed into another prime (55016251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27508128 + 27508129.

It is an arithmetic number, because the mean of its divisors is an integer number (27508129).

Almost surely, 2^55016257 is an apocalyptic number.

It is an amenable number.

55016257 is a deficient number, since it is larger than the sum of its proper divisors (1).

55016257 is an equidigital number, since it uses as much as digits as its factorization.

55016257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55016257 is about 7417.2944528312. The cubic root of 55016257 is about 380.3327118384.

It can be divided in two parts, 550 and 16257, that added together give a 5-th power (16807 = 7⁵).

The spelling of 55016257 in words is "fifty-five million, sixteen thousand, two hundred fifty-seven".