54172687 has 2 divisors, whose sum is σ = 54172688. Its totient is φ = 54172686.

The previous prime is 54172681. The next prime is 54172691. The reversal of 54172687 is 78627145.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54172687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54172681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27086343 + 27086344.

It is an arithmetic number, because the mean of its divisors is an integer number (27086344).

Almost surely, 2^54172687 is an apocalyptic number.

54172687 is a deficient number, since it is larger than the sum of its proper divisors (1).

54172687 is an equidigital number, since it uses as much as digits as its factorization.

54172687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 54172687 is about 7360.2097116862. The cubic root of 54172687 is about 378.3787973249.

The spelling of 54172687 in words is "fifty-four million, one hundred seventy-two thousand, six hundred eighty-seven".