54020831 has 2 divisors, whose sum is σ = 54020832. Its totient is φ = 54020830.

The previous prime is 54020809. The next prime is 54020839. The reversal of 54020831 is 13802045.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54020831 is a prime.

It is a super-2 number, since 2×54020831² = 5836500363861122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54020797 and 54020806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54020839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27010415 + 27010416.

It is an arithmetic number, because the mean of its divisors is an integer number (27010416).

Almost surely, 2^54020831 is an apocalyptic number.

54020831 is a deficient number, since it is larger than the sum of its proper divisors (1).

54020831 is an equidigital number, since it uses as much as digits as its factorization.

54020831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 54020831 is about 7349.8864617081. The cubic root of 54020831 is about 378.0249113413.

Adding to 54020831 its reverse (13802045), we get a palindrome (67822876).

The spelling of 54020831 in words is "fifty-four million, twenty thousand, eight hundred thirty-one".