54172949 has 2 divisors, whose sum is σ = 54172950. Its totient is φ = 54172948.

The previous prime is 54172939. The next prime is 54172967. The reversal of 54172949 is 94927145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 7524049 = 6830^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 54172949 - 2¹² = 54168853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54172919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27086474 + 27086475.

It is an arithmetic number, because the mean of its divisors is an integer number (27086475).

Almost surely, 2^54172949 is an apocalyptic number.

It is an amenable number.

54172949 is a deficient number, since it is larger than the sum of its proper divisors (1).

54172949 is an equidigital number, since it uses as much as digits as its factorization.

54172949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 54172949 is about 7360.2275100706. The cubic root of 54172949 is about 378.3794073192.

The spelling of 54172949 in words is "fifty-four million, one hundred seventy-two thousand, nine hundred forty-nine".