54120631 has 2 divisors, whose sum is σ = 54120632. Its totient is φ = 54120630.

The previous prime is 54120613. The next prime is 54120653. The reversal of 54120631 is 13602145.

Together with previous prime (54120613) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (54120653) can be obtained adding 54120631 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54120631 - 2¹³ = 54112439 is a prime.

It is a super-2 number, since 2×54120631² = 5858085399676322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54120601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27060315 + 27060316.

It is an arithmetic number, because the mean of its divisors is an integer number (27060316).

Almost surely, 2^54120631 is an apocalyptic number.

54120631 is a deficient number, since it is larger than the sum of its proper divisors (1).

54120631 is an equidigital number, since it uses as much as digits as its factorization.

54120631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 54120631 is about 7356.6725494615. The cubic root of 54120631 is about 378.2575603435.

Adding to 54120631 its reverse (13602145), we get a palindrome (67722776).

The spelling of 54120631 in words is "fifty-four million, one hundred twenty thousand, six hundred thirty-one".