54431511 has 16 divisors (see below), whose sum is σ = 73893888. Its totient is φ = 35632800.

The previous prime is 54431497. The next prime is 54431513. The reversal of 54431511 is 11513445.

It is a happy number.

It is not a de Polignac number, because 54431511 - 2⁷ = 54431383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54431513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89370 + ... + 89976.

It is an arithmetic number, because the mean of its divisors is an integer number (4618368).

Almost surely, 2^54431511 is an apocalyptic number.

54431511 is a deficient number, since it is larger than the sum of its proper divisors (19462377).

54431511 is a wasteful number, since it uses less digits than its factorization.

54431511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102.

The product of its digits is 1200, while the sum is 24.

The square root of 54431511 is about 7377.7714114765. The cubic root of 54431511 is about 378.9804409722.

Adding to 54431511 its reverse (11513445), we get a palindrome (65944956).

The spelling of 54431511 in words is "fifty-four million, four hundred thirty-one thousand, five hundred eleven".