54857949 has 4 divisors (see below), whose sum is σ = 73143936. Its totient is φ = 36571964.

The previous prime is 54857923. The next prime is 54857969. The reversal of 54857949 is 94975845.

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 54857949 - 2⁵ = 54857917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54857969) 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, 9142989 + ... + 9142994.

It is an arithmetic number, because the mean of its divisors is an integer number (18285984).

Almost surely, 2^54857949 is an apocalyptic number.

It is an amenable number.

54857949 is a deficient number, since it is larger than the sum of its proper divisors (18285987).

54857949 is a wasteful number, since it uses less digits than its factorization.

54857949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285986.

The product of its digits is 1814400, while the sum is 51.

The square root of 54857949 is about 7406.6152188432. The cubic root of 54857949 is about 379.9675618663.

It can be divided in two parts, 548579 and 49, that added together give a triangular number (548628 = T₁₀₄₇).

The spelling of 54857949 in words is "fifty-four million, eight hundred fifty-seven thousand, nine hundred forty-nine".