54972739 has 2 divisors, whose sum is σ = 54972740. Its totient is φ = 54972738.

The previous prime is 54972721. The next prime is 54972779. The reversal of 54972739 is 93727945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54972739 - 2⁵ = 54972707 is a prime.

It is not a weakly prime, because it can be changed into another prime (54972779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27486369 + 27486370.

It is an arithmetic number, because the mean of its divisors is an integer number (27486370).

Almost surely, 2^54972739 is an apocalyptic number.

54972739 is a deficient number, since it is larger than the sum of its proper divisors (1).

54972739 is an equidigital number, since it uses as much as digits as its factorization.

54972739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The square root of 54972739 is about 7414.3603230488. The cubic root of 54972739 is about 380.2324040032.

The spelling of 54972739 in words is "fifty-four million, nine hundred seventy-two thousand, seven hundred thirty-nine".