54115397 has 4 divisors (see below), whose sum is σ = 61846176. Its totient is φ = 46384620.

The previous prime is 54115393. The next prime is 54115417. The reversal of 54115397 is 79351145.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79351145 = 5 ⋅15870229.

It is a cyclic number.

It is not a de Polignac number, because 54115397 - 2² = 54115393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54115393) 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, 3865379 + ... + 3865392.

It is an arithmetic number, because the mean of its divisors is an integer number (15461544).

Almost surely, 2^54115397 is an apocalyptic number.

It is an amenable number.

54115397 is a deficient number, since it is larger than the sum of its proper divisors (7730779).

54115397 is an equidigital number, since it uses as much as digits as its factorization.

54115397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730778.

The product of its digits is 18900, while the sum is 35.

The square root of 54115397 is about 7356.3168093823. The cubic root of 54115397 is about 378.2453662021.

The spelling of 54115397 in words is "fifty-four million, one hundred fifteen thousand, three hundred ninety-seven".