54149951 has 4 divisors (see below), whose sum is σ = 54449304. Its totient is φ = 53850600.

The previous prime is 54149933. The next prime is 54149957. The reversal of 54149951 is 15994145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15994145 = 5 ⋅3198829.

It is a cyclic number.

It is not a de Polignac number, because 54149951 - 2¹⁴ = 54133567 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 (54149957) 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, 149405 + ... + 149766.

It is an arithmetic number, because the mean of its divisors is an integer number (13612326).

Almost surely, 2^54149951 is an apocalyptic number.

54149951 is a deficient number, since it is larger than the sum of its proper divisors (299353).

54149951 is a wasteful number, since it uses less digits than its factorization.

54149951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299352.

The product of its digits is 32400, while the sum is 38.

The square root of 54149951 is about 7358.6650283866. The cubic root of 54149951 is about 378.3258553683.

The spelling of 54149951 in words is "fifty-four million, one hundred forty-nine thousand, nine hundred fifty-one".