54387397 has 4 divisors (see below), whose sum is σ = 54505836. Its totient is φ = 54268960.

The previous prime is 54387379. The next prime is 54387407. The reversal of 54387397 is 79378345.

It is a happy number.

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 6625476 + 47761921 = 2574^2 + 6911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54387397 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 (54387337) 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, 58528 + ... + 59449.

It is an arithmetic number, because the mean of its divisors is an integer number (13626459).

Almost surely, 2^54387397 is an apocalyptic number.

It is an amenable number.

54387397 is a deficient number, since it is larger than the sum of its proper divisors (118439).

54387397 is a wasteful number, since it uses less digits than its factorization.

54387397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118438.

The product of its digits is 635040, while the sum is 46.

The square root of 54387397 is about 7374.7811492952. The cubic root of 54387397 is about 378.8780317772.

The spelling of 54387397 in words is "fifty-four million, three hundred eighty-seven thousand, three hundred ninety-seven".