54152391 has 4 divisors (see below), whose sum is σ = 72203192. Its totient is φ = 36101592.

The previous prime is 54152389. The next prime is 54152447. The reversal of 54152391 is 19325145.

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

It is not a de Polignac number, because 54152391 - 2¹ = 54152389 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 (54152311) 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, 9025396 + ... + 9025401.

It is an arithmetic number, because the mean of its divisors is an integer number (18050798).

Almost surely, 2^54152391 is an apocalyptic number.

54152391 is a deficient number, since it is larger than the sum of its proper divisors (18050801).

54152391 is a wasteful number, since it uses less digits than its factorization.

54152391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18050800.

The product of its digits is 5400, while the sum is 30.

The square root of 54152391 is about 7358.8308174601. The cubic root of 54152391 is about 378.3315377448.

The spelling of 54152391 in words is "fifty-four million, one hundred fifty-two thousand, three hundred ninety-one".