54399257 has 16 divisors (see below), whose sum is σ = 62042112. Its totient is φ = 47256720.

The previous prime is 54399197. The next prime is 54399271. The reversal of 54399257 is 75299345.

It is a cyclic number.

It is not a de Polignac number, because 54399257 - 2⁶ = 54399193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54399557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21008 + ... + 23454.

It is an arithmetic number, because the mean of its divisors is an integer number (3877632).

Almost surely, 2^54399257 is an apocalyptic number.

It is an amenable number.

54399257 is a deficient number, since it is larger than the sum of its proper divisors (7642855).

54399257 is a wasteful number, since it uses less digits than its factorization.

54399257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548.

The product of its digits is 340200, while the sum is 44.

The square root of 54399257 is about 7375.5851971216. The cubic root of 54399257 is about 378.9055698168.

The spelling of 54399257 in words is "fifty-four million, three hundred ninety-nine thousand, two hundred fifty-seven".