54185257 has 4 divisors (see below), whose sum is σ = 61926016. Its totient is φ = 46444500.

The previous prime is 54185237. The next prime is 54185291. The reversal of 54185257 is 75258145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54185257 - 2⁷ = 54185129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54185227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870369 + ... + 3870382.

It is an arithmetic number, because the mean of its divisors is an integer number (15481504).

Almost surely, 2^54185257 is an apocalyptic number.

It is an amenable number.

54185257 is a deficient number, since it is larger than the sum of its proper divisors (7740759).

54185257 is an equidigital number, since it uses as much as digits as its factorization.

54185257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740758.

The product of its digits is 56000, while the sum is 37.

The square root of 54185257 is about 7361.0635780436. The cubic root of 54185257 is about 378.4080608642.

The spelling of 54185257 in words is "fifty-four million, one hundred eighty-five thousand, two hundred fifty-seven".