54403997 has 4 divisors (see below), whose sum is σ = 54420576. Its totient is φ = 54387420.

The previous prime is 54403991. The next prime is 54404003. The reversal of 54403997 is 79930445.

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 an interprime number because it is at equal distance from previous prime (54403991) and next prime (54404003).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54403997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54403991) 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, 1529 + ... + 10542.

It is an arithmetic number, because the mean of its divisors is an integer number (13605144).

Almost surely, 2^54403997 is an apocalyptic number.

It is an amenable number.

54403997 is a deficient number, since it is larger than the sum of its proper divisors (16579).

54403997 is a wasteful number, since it uses less digits than its factorization.

54403997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16578.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 54403997 is about 7375.9065205573. The cubic root of 54403997 is about 378.9165746254.

The spelling of 54403997 in words is "fifty-four million, four hundred three thousand, nine hundred ninety-seven".