54872197 has 2 divisors, whose sum is σ = 54872198. Its totient is φ = 54872196.

The previous prime is 54872159. The next prime is 54872203. The reversal of 54872197 is 79127845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28153636 + 26718561 = 5306^2 + 5169^2 .

It is a cyclic number.

It is not a de Polignac number, because 54872197 - 2²³ = 46483589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54872297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27436098 + 27436099.

It is an arithmetic number, because the mean of its divisors is an integer number (27436099).

Almost surely, 2^54872197 is an apocalyptic number.

It is an amenable number.

54872197 is a deficient number, since it is larger than the sum of its proper divisors (1).

54872197 is an equidigital number, since it uses as much as digits as its factorization.

54872197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 54872197 is about 7407.5769992623. The cubic root of 54872197 is about 380.0004547548. Note that the first 3 decimals are identical.

The spelling of 54872197 in words is "fifty-four million, eight hundred seventy-two thousand, one hundred ninety-seven".