57226387 has 2 divisors, whose sum is σ = 57226388. Its totient is φ = 57226386.

The previous prime is 57226373. The next prime is 57226409. The reversal of 57226387 is 78362275.

57226387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57226387 is a prime.

It is not a weakly prime, because it can be changed into another prime (57226987) 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, 28613193 + 28613194.

It is an arithmetic number, because the mean of its divisors is an integer number (28613194).

Almost surely, 2^57226387 is an apocalyptic number.

57226387 is a deficient number, since it is larger than the sum of its proper divisors (1).

57226387 is an equidigital number, since it uses as much as digits as its factorization.

57226387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 57226387 is about 7564.8124233189. The cubic root of 57226387 is about 385.3589433702.

The spelling of 57226387 in words is "fifty-seven million, two hundred twenty-six thousand, three hundred eighty-seven".