55257401 has 2 divisors, whose sum is σ = 55257402. Its totient is φ = 55257400.

The previous prime is 55257359. The next prime is 55257409. The reversal of 55257401 is 10475255.

55257401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 6885376 = 6955^2 + 2624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55257401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55257409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628700 + 27628701.

It is an arithmetic number, because the mean of its divisors is an integer number (27628701).

Almost surely, 2^55257401 is an apocalyptic number.

It is an amenable number.

55257401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257401 is an equidigital number, since it uses as much as digits as its factorization.

55257401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55257401 is about 7433.5322021230. The cubic root of 55257401 is about 380.8875858699.

The spelling of 55257401 in words is "fifty-five million, two hundred fifty-seven thousand, four hundred one".