54257389 has 2 divisors, whose sum is σ = 54257390. Its totient is φ = 54257388.

The previous prime is 54257383. The next prime is 54257459. The reversal of 54257389 is 98375245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 4272489 = 7070^2 + 2067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54257389 is a prime.

It is a super-2 number, since 2×54257389² = 5887728522194642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54257383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27128694 + 27128695.

It is an arithmetic number, because the mean of its divisors is an integer number (27128695).

Almost surely, 2^54257389 is an apocalyptic number.

It is an amenable number.

54257389 is a deficient number, since it is larger than the sum of its proper divisors (1).

54257389 is an equidigital number, since it uses as much as digits as its factorization.

54257389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 54257389 is about 7365.9615122535. The cubic root of 54257389 is about 378.5759000438.

The spelling of 54257389 in words is "fifty-four million, two hundred fifty-seven thousand, three hundred eighty-nine".