54729431 has 2 divisors, whose sum is σ = 54729432. Its totient is φ = 54729430.

The previous prime is 54729421. The next prime is 54729439. The reversal of 54729431 is 13492745.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54729431 is a prime.

It is a super-2 number, since 2×54729431² = 5990621235167522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54729391 and 54729400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54729439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27364715 + 27364716.

It is an arithmetic number, because the mean of its divisors is an integer number (27364716).

Almost surely, 2^54729431 is an apocalyptic number.

54729431 is a deficient number, since it is larger than the sum of its proper divisors (1).

54729431 is an equidigital number, since it uses as much as digits as its factorization.

54729431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 54729431 is about 7397.9342386912. The cubic root of 54729431 is about 379.6706079102.

The spelling of 54729431 in words is "fifty-four million, seven hundred twenty-nine thousand, four hundred thirty-one".