54857897 has 4 divisors (see below), whose sum is σ = 54873540. Its totient is φ = 54842256.

The previous prime is 54857893. The next prime is 54857899. The reversal of 54857897 is 79875845.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14776336 + 40081561 = 3844^2 + 6331^2 .

It is a cyclic number.

It is not a de Polignac number, because 54857897 - 2² = 54857893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54857893) 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, 143 + ... + 10475.

It is an arithmetic number, because the mean of its divisors is an integer number (13718385).

Almost surely, 2^54857897 is an apocalyptic number.

It is an amenable number.

54857897 is a deficient number, since it is larger than the sum of its proper divisors (15643).

54857897 is a wasteful number, since it uses less digits than its factorization.

54857897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15642.

The product of its digits is 2822400, while the sum is 53.

The square root of 54857897 is about 7406.6117084670. The cubic root of 54857897 is about 379.9674418088.

The spelling of 54857897 in words is "fifty-four million, eight hundred fifty-seven thousand, eight hundred ninety-seven".